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  "last_updated": "2023-07-14T18:58:06.429737+00:00",
  "provenance": {
    "date_added": "2019-08-29",
    "source": "Harvard",
    "batch": "2018"
  },
  "casebody": {
    "judges": [],
    "parties": [
      "THE PEOPLE OF THE STATE OF ILLINOIS, Plaintiff-Appellee, v. CASEY NOWICKI, Defendant-Appellant."
    ],
    "opinions": [
      {
        "text": "JUSTICE JOSEPH GORDON\ndelivered the opinion of the court:\nIn December 2000, defendant, Casey Nowicki, was charged in a seven-count indictment for the 1984 murder of the victim, Marcy Andrews, whose body was never found. Following a jury trial in the circuit court of Cook County, defendant was found guilty of first degree murder and sentenced to natural life in prison. Defendant contemporaneously filed a posttrial motion seeking a new trial and a section 2 \u2014 1401 (735 ILCS 5/2 \u2014 1401 (West 2004)) petition for relief from judgment seeking to vacate his conviction. The circuit court denied defendant\u2019s posttrial motion for a new trial and dismissed his section 2 \u2014 1401 petition, and defendant now appeals from both. Defendant contends that (1) the State failed to prove him guilty beyond a reasonable doubt; (2) he received ineffective assistance of counsel where in opening argument counsel promised to advance various theories of the case but then failed to do so, and where counsel failed to challenge the competency of the State\u2019s key witness despite the witness\u2019s inability to recollect the events; (3) he was denied due process when the trial court permitted the State to present and rely on the perjured testimony of its key witness at trial; and (4) he was denied a fair trial when the prosecution improperly shifted the burden of proof to defendant. For the reasons that follow, we affirm.\nI. BACKGROUND\nIn 2000, nearly 16 years after the crime had been committed, defendant was charged in a seven-count indictment with the first degree murder of Marcy Andrews. That indictment included: (1) one charge of intentional first degree murder in violation of section 9 \u2014 1(a)(1) of the Criminal Code of 1961 (Criminal Code) (720 ILCS 5/9 \u2014 1(a)(1) (West 2000)), in that defendant unlawfully, intentionally or knowingly killed Marcy Andrews by drugging and strangling her; (2) one charge of first degree murder in violation of section 9 \u2014 1(a)(2) of the Criminal Code (720 ILCS 5/9 \u2014 1(a)(2) (West 2000)), in that defendant knew that the drugging and strangling of Marcy Andrews created a strong probability of death or great bodily harm to her; and (3) five charges of felony murder in violation of section 9 \u2014 1(a)(3) of the Criminal Code (720 ILCS 5/9 \u2014 1(a)(3) (West 2000)), in that Marcy Andrews was killed while defendant was committing the forcible felonies of rape, aggravated kidnaping, aggravated battery, unlawful restraint, and/or deviate sexual assault.\nDefendant was tried before a jury in July 2005. The evidence adduced at trial established the following pertinent facts. In 1984, Sara Andrews lived on the north side of Chicago with her husband Robert and two minor children. Sara also had an adult daughter, the victim, 24-year-old Marcy Andrews. At that time, Marcy was 5 feet 2 inches tall and weighed about 120 pounds.\nSara testified at trial that Marcy was not Robert\u2019s daughter but rather the daughter of James Prather, who was no longer alive at the time of the trial. Sara explained that she married Robert when Marcy was 11 years old and that she then changed Marcy\u2019s last name to Andrews. According to Sara, Marcy lived in an apartment in her stepgrandmother\u2019s house on the northwest side of Chicago.\nAccording to Sara, sometime in 1982, Marcy approached her and told her that she had a drinking problem and that she wanted to go to a treatment center. Sara stated that soon thereafter Marcy entered herself in a program called Crossroads at St. Xavier University, where she stayed for about nine months. While at Crossroads, Marcy attended Daley Junior Community College. According to Sara, Marcy wanted to make sure her treatment was complete and she also wanted to counsel other people who came to the center.\nAfter leaving Crossroads, Marcy moved into an apartment in her stepgrandmother\u2019s house and enrolled in nearby Northeastern Illinois University. In February 1984, Marcy worked at Periodical Publishers on West Lawrence Avenue in Chicago. At that time, she had stopped attending Northeastern University because she had made plans to move to Paducah, Kentucky, where Sara\u2019s sister lived. According to Sara, Marcy had already traveled to Paducah to apply for a job in WalMart, find an apartment, and obtain the necessary application forms for Paducah Community College. Marcy intended to leave Chicago in mid-March in order to start the summer semester at Paducah Community College on June 1.\nSara testified that at approximately 5 p.m. to 6 p.m., on February 13, 1984, she arrived home from work, where Marcy had been babysitting her stepsister Jessica. According to Sara, Marcy had just taken a shower and was blow-drying her hair. Marcy needed a ride back to her apartment, and her stepfather gave her a ride home. Sara testified that this was the last time she saw Marcy.\nSara averred that two days later, on February 15, 1984, she called Marcy in order to ask if they could get together so that she could give Marcy a box of Valentine\u2019s Day chocolates that she had bought for her. Sara stated that she was unable to reach Marcy and instead spoke to her mother-in-law, who shared a telephone with Marcy. Sara testified that she learned that Marcy had not called her stepgrandmother the night before to tell her that she would not be home. Sara stated that she became concerned when she heard this. She explained that it was unusual for Marcy not to call her stepgrandmother because it was common for Marcy\u2019s stepgrandmother to wait up for Marcy with a sandwich and something to drink so that they could talk before going to bed. According to Sara, Marcy had always been very attentive and respectful toward her stepgrandmother.\nSara averred that she then learned that Marcy had been with a friend named Dori Pernell, but that she did not know Dori\u2019s address or telephone number. Sara attempted to find Dori\u2019s telephone number but discovered that it was unlisted. She then asked her mother-in-law to make a note of everyone who called for Marcy and get their contact information. According to Sara, her mother-in-law did just that and every time someone called, she would report to Sara, who would call the person and ask them to tell her the last time they had seen or heard from Marcy. For a week, Sara could not find anyone who had seen or heard from Marcy. On the weekend, Sara drove to the family\u2019s second home in Michigan to check if Marcy had gone there and collect some of her old address books, where she hoped she could find Dori\u2019s telephone number. To Sara\u2019s dismay, however, there were no signs that Marcy had been inside the Michigan home.\nWhile Sara was in Michigan, she received a telephone call from her mother-in-law saying that Dori had called and left a telephone number. Sara called Dori from Michigan, and after speaking with her, Sara decided to immediately call the police. Upon her return to Chicago, Sara also filed a missing person\u2019s report with the Chicago police department, providing the police with descriptions and photographs of Marcy and any other relevant information.\nSara testified that she did not hear from the police in the next few days, but that she continued \u201cto call anybody she could,\u201d including her sister in Paducah, her parents, and other relatives, asking if they had heard from or seen Marcy. Sara also called Marcy\u2019s employer, who told her that Marcy had not shown up for work. Sara telephoned Crossroads and spoke to a few counselors there, who told her that Marcy was supposed to have lunch with one of them, but that she failed to show up. The counselors were \u201cquite concerned\u201d when they had not heard from Marcy.\nSara averred that she also went into Marcy\u2019s apartment. According to Sara, the apartment was very neat, Marcy\u2019s bed was made, a paperback book was open and overturned on the night stand and Marcy\u2019s reading glasses were on top of the paperback. It appeared to Sara that Marcy had started separating her clothes for the move to Paducah, because there was \u201ca pile of discards, she had a pile of washing, and a pile of ironing,\u201d and the ironing board was set up. On the desk Sara found a few bills in envelopes, with dates written on them indicating on which date they were supposed to be mailed. On the desk, Sara also found some gold chains and jewelry. Sara also observed a request for transcripts to be sent to Kentucky and a savings passbook for Irving Federal Savings. Sara testified that from what she observed in the apartment she could not determine if anything was missing or if it appeared that Marcy was going to come back. Sara averred that she could not find Marcy\u2019s purse, but that she took the contents of the wastebasket, Marcy\u2019s old telephone books and letters, Christmas cards, and \u201canything that was there that had anything written on it.\u201d\nIn the following days, Sara spoke to Marcy\u2019s friends, Dori and Gay Dell, and then to David Harold. Sara searched area hospitals for Marcy but there were no records of Marcy there. Sara also made flyers with Marcy\u2019s photo and together with relatives distributed them continuously throughout the area.\nSara also contacted Marcy\u2019s birth father and asked him if Marcy had talked about anything out of the ordinary recently. Marcy\u2019s father was very concerned and told Sara that the last time he spoke to Marcy she seemed normal. According to Sara, Marcy\u2019s father called back with a list of all the calls Marcy had made from Boston at the time she was visiting him. Sara contacted all the people from that list but learned nothing about Marcy\u2019s whereabouts.\nSara next sent a mass-mailing explaining the circumstances of Marcy\u2019s disappearance to all the coroners in every county in Illinois, Wisconsin, Indiana and Michigan. Coroners began contacting her and asking for medical records.\nAccording to Sara, Marcy had a gynecologist, a foot doctor, and a dentist. She obtained medical records and X rays from the foot doctor and dentist and gave them to the police. She also contacted Marcy\u2019s gynecologist and was told that the last time Marcy had been there was in December 1983.\nSara testified that she then called the National Center for Missing and Exploited Children, where she was told that the agency dealt only with the disappearance of minors under the age of 14, and was referred to an agency called Search Registry. Sara sent Marcy\u2019s picture and information to Search Registry, which distributed it to places like the Salvation Army and halfway houses throughout the United States. This search produced no results.\nSara averred that in her efforts to find Marcy she also went to Marcy\u2019s bank, the Irving Federal Savings and Loan, in Chicago, where she spoke to a teller. According to Sara, the last entry made in Marcy\u2019s passbook was in December 1983. The teller put a red flag on Marcy\u2019s account to notify Sara of any future activity on the account. According to Sara, seven years later, in 1991 she received a notification indicating that Marcy\u2019s account was \u201cunclaimed property.\u201d Sara went to the bank and collected the money, which totaled $91.\nSara was next questioned about Marcy\u2019s habits and routines. Sara testified that Marcy was a girl who always stayed in touch with friends and relatives. Sara stated that Marcy regularly visited her house, especially on holidays, and spent time with Sara\u2019s younger children. According to Sara, Marcy was \u201calways wanting to take them to the zoo, or do something fun with them.\u201d Sara also stated that she was very close to Marcy because for the first 11 years of Marcy\u2019s life the two of them were together. Also, Sara went to college while she was raising Marcy, and the two of them were very open with each other. Sara testified that she believed Marcy would come to her if she had a problem or needed to talk about something.\nSara testified that Marcy was also very conscientious about her work and always wanted to make her quotas as a verifier in the publishing company where she worked when she disappeared in February 1984. Sara stated that after February 14, 1984, Marcy never showed up to work, and even left a paycheck there.\nSara finally testified that she \u201cdid everything that she possibly could\u201d to find Marcy, but that to her knowledge no one has ever heard or seen Marcy since her disappearance on February 14, 1984.\nOn cross-examination, Sara acknowledged that Marcy was born on January 1, 1960, and that her birth certificate reads Marcy Jo Prather. Sara explained that she and Marcy\u2019s biological father, James Prather, were never legally married but that Sara had put the name Prather on Marcy\u2019s birth certificate because Sara and Prather had \u201cbeen living [together] common law for several months.\u201d\nSara testified that she lived with Marcy in Vermillion County, Illinois, until 1964 when she moved to Chicago, where she met Robert Andrews. Sara acknowledged that in 1971 when Marcy was 11 years old she married Robert Andrews and changed Marcy\u2019s name to Andrews.\nOn cross-examination, Sara acknowledged that Marcy and her biological father, James Prather, never spent time together when Marcy was a little girl. Sara testified, however, that while Marcy was at Crossroads in 1983 she contacted her birth father and went to visit him in Boston. According to Sara, Marcy was disappointed in James Prather because the first thing he did when he met her at the airport, although he knew she was coming from a rehabilitation center, was to invite her to go to a bar, telling her \u201cYou are here with me, you can do anything you want.\u201d Sara testified that they were unaware at that time that Prather was an alcoholic. According to Sara, Marcy had told her that James Prather \u201cdoes not know how to be a father.\u201d Sara stated that despite this disappointment, soon after meeting James Prather, Marcy went on a cruise with him and his new girlfriend.\nOn cross-examination, Sara also acknowledged that Dori. had been Marcy\u2019s roommate before she entered Crossroads. She also testified that she later became aware that Dori and Marcy did drugs together and that she was concerned that Marcy continued to be friends with Dori after she came out of the intervention program. Sara acknowledge, however, that she did nothing to prevent Marcy from spending time with Dori.\nSara admitted that Marcy dropped out of Lane Tech high school to waitress in a cocktail lounge but indicated that Marcy always had a job since age 16, first at Treasure Island, then at Marina City and then in the coat check of the East Bank Club.\nOn cross-examination, Sara admitted that after dropping out of high school, Marcy, together with Dori, went by bus to Sara\u2019s sister\u2019s house in Texas. Sara stated that although at that time she was unaware that Dori and Marcy were doing drugs on that trip, she now knows that they were.\nOn cross-examination, Sara also testified that at the time she was working in the East Bank Club, Marcy told her that she was in a car accident where she blacked out. According to Sara, Marcy was with a basketball coach and they had borrowed somebody else\u2019s car, when they got into the accident. Marcy told Sara that she \u201cdid not know why she suddenly decided to move the car because it was double-parked,\u201d but that this was when they got into the accident. Marcy also told Sara that she was concerned that the girl whose car she had borrowed and wrecked would do something to her and that she therefore needed to leave town for a while.\nSara also acknowledged that after that car incident, Marcy went on about a month-long \u201ccross-country jaunt with a Mayflower truck driver.\u201d Sara explained, however, that during the trip Marcy called her and told her the name, dispatch number, and log number of the truck driver. She also testified that Marcy called her every few days and that she sent post cards to her stepsiblings. Sara stated that it appeared that Marcy liked traveling around the country and helping the truck driver with his inventory.\nMichael John Panisi next testified that he was born Michael John Panisiak but that the military changed his name to Panisi. Panisi testified that he grew up in Chicago near Chicago Avenue and Western Avenue, and that he dropped out of school after the eighth grade. Panisi stated that at age 17 he joined the military and that he was in the Special Forces, \u201ca beret.\u201d Panisi stated that he served three tours in Vietnam and that he was 21 years old when he left the military. Panisi testified that as a result of the drugs he took in Vietnam and the flashbacks that he experienced from the war, he was \u201cmessed up\u201d after he left the military. He testified that \u201ctic sticks, cocaine, marijuana, and heroine\u201d were available to him in Vietnam and that this was a problem for a lot of soldiers there, who died as a result of these drugs.\nPanisi averred that after he left the military, he had many odd jobs, including working as a cook, a truck driver, a taxi cab driver, and a construction worker. He described himself as a \u201cjack of all trades, master of none.\u201d\nPanisi was next asked by the prosecutor whether he knew defendant. Panisi indicated that he did. At this point, the prosecutor asked Panisi if he could see defendant in the courtroom, and Panisi indicated that he could not. After standing up and looking around the courtroom, Panisi could still not identify defendant. He, however, explained that it has been a long time, about 20 years, since he last saw defendant.\nPanisi next testified that in February 1984, he had known defendant for about a couple of months. He stated that he had been to defendant\u2019s apartment on Rockwell and Iowa, directly across the street from Archie\u2019s bar. According to Panisi, defendant\u2019s apartment was on the second floor of the building, which was owned by defendant\u2019s mother. Panisi testified that around Valentine\u2019s Day in February of 1984 he went to defendant\u2019s apartment to buy drugs. While there he saw a naked girl handcuffed to a radiator who was \u201call scr-ed up on the drugs that [defendant] was selling.\u201d Panisi stated that you could not see the girl from the front door, but that you had to enter the kitchen, where the girl was handcuffed to a cast-iron, \u201cold time\u201d radiator. According to Panisi the girl was sitting on the kitchen floor with one hand handcuffed to the radiator. When Panisi saw the girl he asked defendant \u201cMan, what is this? Man what are you doing with this girl?\u201d Defendant replied \u201cShe\u2019s too screwed up to be walking around the apartment.\u201d Defendant told Panisi that he had given the girl some THC, which she took of her own free will. Defendant also told Panisi, \u201cI can\u2019t have her running all around while I\u2019m trying to do my business, and she\u2019s falling all around, and I don\u2019t want her to start busting up shit and hurt herself.\u201d Panisi explained that defendant sold drugs, specifically THC, which is an animal tranquilizer also known as PCP, \u201cangel dust\u201d or \u201ctic.\u201d\nPanisi testified that after observing this, he removed the girl\u2019s handcuffs and walked her to the kitchen table to give her some peanut butter, milk and orange juice. Panisi intended to make the girl vomit to get the drugs out of her system, but after he gave her the orange juice and milk she only started spitting the food and vomiting a little, \u201cbut not enough.\u201d Panisi told defendant to \u201cget [the girl] some clothes,\u201d and the two of them dressed her in pants and a blouse, but with difficulty because she was \u201cflopping all over the place, and \u201cwas too zoned to help.\u201d After that, Panisi bought drugs off defendant and told him he had to go. Defendant responded, \u201c[w]ell I\u2019m going to just cuff her back up.\u201d Panisi took his \u201ctwo grams\u201d of \u201ctie\u201d and left.\nPanisi averred that he went to defendant\u2019s apartment again the next day and observed the girl on the couch next to defendant. The girl was not handcuffed at this time. According to Panisi, a customer came by to buy drugs from defendant, and defendant told him \u201c[h]ere man, take care of this girl.\u201d The customer then forced the girl to have oral sex with him. Panisi testified that the girl again seemed to be \u201cout of it,\u201d and that she did not appear to know what was going on around her. Panisi then explained that defendant told him that the girl had snorted one whole gram of THC, which, according to Panisi was \u201ca lot.\u201d Panisi himself would take only a fourth of a gram. Panisi further stated that defendant\u2019s drugs were so potent that \u201c[s]ome people don\u2019t come back from it. That\u2019s how strong his stuff was.\u201d\nAfter refreshing his memory from the transcript of his grand jury testimony, Panisi acknowledged that when he asked defendant how the girl ended up in this condition, defendant told him that they were snorting drugs together and that he had told her that she was snorting cocaine when in fact she was snorting the more powerful THC. Defendant said that he tricked the girl in this way because \u201cshe screwed up his mama\u2019s car.\u201d According to defendant, the girl had grabbed his steering wheel and made him crash the car. Panisi stated that defendant then showed him the car, which was white and had right front damage, and asked Panisi to help him fix it. Panisi refused, indicating that he did not know anything about cars.\nPanisi also averred that he initially called the girl Stacy but that after he looked into her wallet, which was on the couch, he saw her driver\u2019s license and discovered that her name was Marcy. Panisi stated that he then told the girl, \u201cMarcy, you got to straighten up,\u201d but it was like talking to a \u201cvegetable.\u201d Panisi testified that throughout the two days the girl\u2019s condition did not change much, because of how much THC she had initially taken.\nPanisi testified that he went to the apartment to buy drugs on the third day. This time the girl was in a blanket or rug on the floor. When Panisi asked defendant what had happened, defendant responded \u201cshe\u2019s died on me, man.\u201d Panisi told defendant to call the police, but defendant said, \u201cno, help me get her out of here.\u201d Panisi refused and started walking down the steps. Defendant told Panisi not to come to the apartment again, put the body over his shoulder and took it down the stairs himself. Panisi then observed defendant put the girl\u2019s body in the trunk of his mother\u2019s car and drive off, swearing at Panisi. Panisi averred that defendant put the body in a green car, and he explained that he knew that the car belonged to defendant\u2019s mother, because he had previously met defendant\u2019s mother, who lived on the first floor of the building, and had observed her driving that same green car.\nPanisi finally testified that he suffers from bipolar disorder for which he takes lithium and Haldol. Panisi also indicated that he receives $720 a month from Social Security because of his bipolar disorder and that he has been receiving these payments for about 15 years. Panisi acknowledged that before trial he was in the Las Vegas city jail where he was to remain until October 2005, but that investigators from the State\u2019s Attorney\u2019s office flew to Las Vegas to bring him to Chicago in July 2005, to testify at defendant\u2019s trial. Panisi explained that he then received \u201ctime considered served for the Las Vegas case.\u201d Panisi finally stated that after his testimony he would be taken to a Greyhound station with the State\u2019s Attorney\u2019s office paying for his trip and giving him some money for food.\nOn cross-examination, Panisi acknowledged that when he was younger he was called \u201cGymshoe\u201d because when he got into fights he would take off his shoe and beat guys with it. Panisi also admitted that he has been banned from all of the casinos in Las Vegas for counting cards.\nAt this point in the cross-examination, Panisi was questioned regarding his third visit to defendant\u2019s home, and he stated that he could not remember what he had said during direct examination regarding this visit, explaining, \u201cI\u2019m serious. I can\u2019t. Like I said, I\u2019m not on my drugs now and my memory in and out [sic]. I\u2019m not trying to avoid the questions or anything.\u201d Panisi then admitted that he was presently not taking either lithium or Haldol. When defense counsel repeated his question regarding Panisi\u2019s third visit to defendant\u2019s apartment, Panisi indicated that he remembered that he had testified that he saw defendant carry the girl\u2019s body in a rug into a green car. He then indicated that the car may have been a tan Toyota instead and stated that he remembered defendant\u2019s mother drove a tan car.\nPanisi then acknowledged that in 1985 he told a grand jury that the day he saw defendant carry the body to the car was on February 18, 1984. Panisi also testified that on that same night he telephoned defendant at approximately 7:30 p.m. Upon defense counsel\u2019s questions, however, Panisi then acknowledged that at about 12:40 p.m., on February 18, 1984, he was arrested by the Chicago police for stealing a car stereo.\nOn cross-examination, Panisi also admitted that in February 1984 he had a habit of drinking and taking Valium pills which he stole from his grandmother. Panisi also acknowledged that he has been doing drugs for so long that he has no more veins and that he \u201ccan\u2019t do drugs no more.\u201d Panisi indicated that when he visited defendant\u2019s apartment in the 1980s he would mostly take LSD. He stated that he did heroin a couple of times but did not like it because it made him \u201cnod out.\u201d Panisi indicated that his veins were ruined by the pain medication he injected himself. Panisi stated that he used to steal prescriptions from his doctor and write his own prescriptions for diet pills and other medicines.\nPanisi acknowledged that within the last 15 years he also began working as a federal informant. As part of his informant duties, Panisi was paid by handlers to make introductions for people who were trying to buy illegal things. Panisi acknowledged that he \u201clearned that if you gave the government information and they acted on it, they would pay you for it.\u201d\nOn cross-examination, Panisi also admitted that in 2002, he was arrested and convicted for attempted larceny in Nevada for grabbing a person by the neck in front of a restaurant in order to get money. Panisi indicated that before this arrest he lived on the streets of North Las Vegas and slept on cardboard and on a sleeping bag in a field, with his dog. Panisi however averred that now he has a girlfriend and stated that after testifying at trial he planned on living with her.\nOn redirect examination, and over defense counsel\u2019s objection, Panisi testified that shortly after he observed Marcy chained to the radiator, he had a conversation with a friend, Michael Reinke, wherein he told Reinke what he had seen in defendant\u2019s apartment. Panisi also testified that in 1985 in front of the grand jury he similarly testified to having observed Marcy chained to a radiator in defendant\u2019s apartment on Valentine\u2019s Day 1984.\nDelores \u201cDori\u201d Garrity next testified that in 1984 Marcy Andrews was one of her best friends. Dori was aware that Marcy planned on going to school somewhere down south in the upcoming semester. Dori testified that on February 13, 1984, Marcy called her and asked her to meet at the bar. The two girls met at Jaime\u2019s Elsewhere on Lawrence Avenue, where Dori worked. Dori acknowledged that she knew Marcy had previously been in an alcohol and substance abuse program, but testified that a few weeks before that she had seen Marcy having a few drinks. Dori averred that after meeting Marcy in the bar, the two of them went to Dori\u2019s apartment to watch some television. Marcy spent the night at Dori\u2019s house.\nDori testified that the next day, February 14, 1984, was unusually warm so the two of them decided to go the botanical gardens to walk. Dori also invited their friend, Gay Dell, who lived in an apartment above Dori, to come along. According to Dori, all three of them then \u201cgot a ride\u201d to defendant\u2019s apartment to buy drugs, because they wanted to \u201cget high and go to the botanical gardens.\u201d Gay Dell wanted to take \u201ctic\u201d (or THC) and Marcy wanted to smoke marijuana. Dori averred that she and Marcy had done \u201ctic\u201d in the past. According to Dori, Gay Dell had been to defendant\u2019s apartment before, but Marcy had not.\nDori testified that once they came to defendant\u2019s apartment, she and Gay Dell snorted some \u201ctic\u201d and Marcy smoked some marijuana and had a few beers. Dori averred that the girls eventually changed their mind about going to the botanical gardens and instead remained in defendant\u2019s apartment talking. People were coming in and out of the apartment that Dori had not seen in a while and \u201cthe day went by.\u201d According to Dori, Marcy eventually snorted a little bit of \u201ctic,\u201d and the girls then recorded a funny Valentine\u2019s Day message on defendant\u2019s answering machine. According to Dori, they spent a total of about five to seven hours in defendant\u2019s apartment.\nAt about 7 p.m., defendant offered the girls a ride home in a small white car. While in the car, defendant \u201clighted up a joint and took a couple of hits and passed it to Gay [Dell] and Marcy.\u201d According to Dori, Marcy was sitting in the rear passenger side of the vehicle, and Dori was sitting right in front of her next to defendant. Dori testified that they then got into an accident. Defendant, who had been driving, ran the car into a viaduct on Western Avenue, and Dori\u2019s seat slid backwards and injured Marcy\u2019s ankle. According to Dori, Marcy\u2019s ankle looked broken, and she could not stand on it at all. Dori, who only had a few bruises, offered to take Marcy to the hospital, but defendant \u201cwent crazy on us.\u201d He started yelling at all three girls, saying \u201cYou are all bitches, witches. This is all your fault.\u201d According to Dori, defendant was blaming them for the accident and told them he was angry because he did not have insurance.\nDori testified that the police then came and took defendant and Marcy with them. Defendant gave Dori and Gay Dell his car keys and some money and told them to wait for the tow truck, while he went to the police station. He told them that he would take Marcy to the hospital afterwards. Dori stated that this was the last time she saw Marcy.\nAccording to Dori, after defendant\u2019s car was towed, she and Gay Dell went back to her apartment and tried to call Marcy to see if she was ok. Dori stated that there was no answer at Marcy\u2019s apartment. She then called defendant\u2019s house and heard the Valentine\u2019s message that they had made that afternoon. Dori stated that eventually defendant called her back and asked what had happened to his car and why it had not been towed back to his place. Dori tried to explain that he did not leave them enough money and that the driver took the car to another location, but defendant became angry and screamed at her. Dori asked defendant where Marcy was and if she had gone to the hospital but defendant avoided her questions.\nDori testified that she and defendant exchanged a few telephone calls that night until finally she told him, \u201cI will bring you the keys if I can talk to Marcy.\u201d Defendant then put Marcy on the telephone. According to Dori, Marcy did not sound good. She told Dori, \u201cPlease get me out of here,\u201d and \u201c[h]e\u2019s scaring me.\u201d Dori explained that Marcy first told her that defendant wanted her to stay the night and that he would take her to the hospital in the morning, but that she then stated \u201cPlease get me out of here. I have to get out of here.\u201d Dori averred that Marcy\u2019s voice sounded scared and frightened, and that she sounded like she was \u201chigh,\u201d with her speech slow and slurred.\nDori stated that immediately after this telephone call, she and Gay Dell got a ride from John Hefner to defendant\u2019s apartment. Dori rang the doorbell but there was no answer. Together with Gay Dell and John Hefner, Dori went across the street to a bar and called defendant\u2019s home but there was no answer. Dori continued to call and leave messages on defendant\u2019s answering machine, saying, \u201cOpen the door. Let me in. If you want your keys, I want Marcy.\u201d Dori stated that she could see a shadow walking in the front room of defendant\u2019s apartment, but stated that no one ever moved the curtain aside. Dori threw rocks at defendant\u2019s window but defendant never answered his door. Eventually, Dori, Gay Dell and John Hefner went home.\nDori continued to call defendant the next day. Once Dori finally reached defendant, she asked him why he would not open the door for her, and he told her that she never came by the house. Defendant asked for his car keys again and told Dori that Marcy had left. Dori did not believe defendant because Marcy could not walk after the car accident, so she told him that she would come to his house and bring his car keys if he let her into his apartment so that she could see if Marcy was there.\nDori testified that she then went again to defendant\u2019s apartment together with her brother and Gay Dell. When she rang the doorbell, defendant ran down the stairs to the ground floor screaming at her. According to Dori, although it was very cold, defendant was only wearing pants, a rabbit fur vest and a chain hanging from his neck. Dori asked to go upstairs, but defendant would not let her, threatening that he would kill her and throw battery acid in her face, and indicating that he knew where she and Gay Dell lived. Dori was angry at defendant and she threw his car keys in his face and left.\nDori averred that she then called Marcy\u2019s grandmother and mother but was not able to reach them. Dori continued to call defendant and go to his apartment every day. Toward the end of the week, Dori was finally able to reach Marcy\u2019s grandmother, and tell her what had happened. Dori asked Marcy\u2019s grandmother to have Marcy\u2019s mother call her back. Sara Andrews called Dori after she returned home from a weekend vacation. Dori told her what had happened and asked her to call the police and go with her to defendant\u2019s apartment.\nOn cross-examination, Dori admitted that in 2004 she was convicted of forgery and sentenced to 18 months\u2019 probation. Dori acknowledged that she started using THC when she was 17 years old and that she continued to use it into her twenties. Dori also testified that she had tried cocaine, but not heroin. Dori stated that she was a \u201cbad person\u201d and that she made a very big mistake in not calling the police or Marcy\u2019s family earlier.\nGay Dell next testified that she knew Marcy through Dori. Gay stated that she spent February 14, 1984, with Marcy and Dori. According to Gay, it was an unusually warm day and the three of them decided to go to the botanical gardens. However, they were first going to get \u201chigh,\u201d so Dori called defendant and asked if they could come by his apartment to \u201cpick up something.\u201d Gay averred that at that time she had met defendant on two prior occasions.\nTogether with Marcy and Dori, Gay went to defendant\u2019s house. Instead of just stopping by and picking up the drugs, the girls ended up spending the day at defendant\u2019s house. According to Gay, defendant gave them beer and \u201ctic,\u201d and they partied all day long. Gay also recalled that together with Marcy and Dori she made a Valentine\u2019s Day recording on defendant\u2019s answering machine. Gay testified that throughout the day, people kept coming in and out of defendant\u2019s house getting drugs. She recognized only two of the men who stopped by the apartment that day \u2014 Jeff Wild and Dave Harold. Gay stated that at one point Dori wanted to go home, but that defendant kept asking her to \u201cwait a few more minutes.\u201d After a while, Dori told defendant that they would just take a cab, and defendant then agreed to drive them home. According to Gay, defendant was annoyed that Dori wanted to leave with the girls.\nGay testified that once they got into the car with defendant, defendant ran into a viaduct. Gay was not injured, but Dori was bruised, and Marcy kept saying \u201cmy foot, my foot, I think I broke my foot.\u201d According to Gay, defendant was angry at the three of them, blaming them for the accident and calling them \u201cbitches.\u201d Defendant told Dori and Gay that he would take Marcy to the hospital. Marcy went with defendant and Gay went home with Dori.\nGay averred that once at Dori\u2019s apartment, she and Dori tried to call defendant\u2019s house to see if he had taken Marcy to the hospital but there was no answer, and they kept reaching the Valentine\u2019s Day message they had made at defendant\u2019s apartment that afternoon. According to Gay, later that night they were able to speak to defendant and then to Marcy. Defendant wanted his car keys returned, and they told him that they would give him the keys if he would let them talk to Marcy. Gay testified that when she finally spoke to Marcy, Marcy told her, \u201cPlease come and get me. My ankle hurts. I want to go home.\u201d According to Gay, Marcy sounded incoherent and her speech was slurred. Gay testified that Marcy did not sound like this at the time of the accident, and that it therefore appeared to Gay that Marcy was \u201chigh\u201d on THC, which she must have taken after the accident.\nGay stated that after she spoke to Marcy at about 10 p.m., she and Dori went to defendant\u2019s house on Iowa and Rockwell to try and get Marcy. They rang the bell numerous times but defendant would not open the door. Gay stated that she and Dori then went to a bar across the street and used a pay phone to call defendant, but again got no answer. Gay observed a silhouette pacing back and forth in defendant\u2019s second floor apartment. She and Dori threw rocks at the window, but no one answered the door. Gay stated that after that night, she never saw or heard from Marcy again.\nAccording to Gay, a couple of days later, she and Dori went back to defendant\u2019s apartment. They rang the doorbell and defendant came flying down the stairs. Gay averred that defendant had no shirt on and was wearing a fur vest and a big medallion on his chest. Defendant screamed at Gay, demanding his keys and saying, \u201cI\u2019m going to kill you. I know where you live. I\u2019ll throw battery acid in your faces if you don\u2019t give me the keys.\u201d According to Gay, Dori then threw the car keys at defendant and the two of them left. Gay testified that she never called the police, which she regrets, but explained that at the time she did not think it was wise \u201cto call the police on a drug dealer.\u201d\nOn cross-examination, Gay admitted that she had \u201cdone drugs many times, all the time, for a long time.\u201d She explained that she started abusing drugs as a teenager and that she continued to do so into her early twenties. Gay had used marijuana, THC, cocaine and alcohol. When questioned about whether she ever sold drugs, Gay first indicated that she did not. However, after being questioned about her 1987 conviction for delivery and manufacture of a controlled substance, Gay admitted that she pled guilty and was convicted of these two charges. Gay, however, explained that she had never sold those drugs herself, but rather that she had been arrested together with her boyfriend inside her boyfriend\u2019s house, at a time he was selling drugs.\nRoger Sexton next testified for the State. Sexton first indicated that he was 44 years old and testified about his prior criminal record. Sexton admitted that in September 2002 he pled guilty to two charges of interstate transportation of stolen property and that he was sentenced to 120 months\u2019 imprisonment and 5 months\u2019 imprisonment to be served consecutively. Sexton acknowledged that at the time of his testimony he was still serving that sentence in the Pennsylvania Federal Correctional Institution and that after his testimony he would be returned there. Sexton also admitted that in 1997 he pleaded guilty and was sentenced in Illinois to 18 months\u2019 probation on a possession of controlled substance charge. At that time, Sexton also pleaded guilty to conspiracy to transport stolen goods and received 38 months\u2019 imprisonment and 3 years of supervised release. Sexton testified that in August 2000, he was arrested in Indiana on a warrant for the violation of that supervised release. Sexton further averred that in 1989, he was sentenced to 4 years in the Illinois Department of Corrections for escape, and that in 1994 he served 18 months in an Ohio jail on a breaking and entering charge.\nSexton next testified about his relationship with defendant. Sexton stated that he first met defendant in 1995 in the Federal Metropolitan Correctional Center in Chicago and that they knew each other for only a few months. Sexton explained, however, that he next saw defendant in 1998 when Sexton was sentenced to 38 months\u2019 imprisonment in the federal correction facility in Oxford, Wisconsin. Sexton indicated that for the next four years he and defendant saw each other on a regular basis. Sexton and defendant would walk together in the prison yard, talk, eat lunch and work out together, lifting weights.\nSexton testified that in the spring or summer of 1998, he had an unusual discussion with defendant, \u201cabout a girl.\u201d Defendant told Sexton that he had just lost his appeal, and Sexton inquired as to why. Defendant then said, \u201cWell, that bitch is still coming back to haunt me after all these years.\u201d When Sexton asked defendant what he was talking about, defendant explained that the judge had sentenced him to too much time and went on to say that \u201cthey couldn\u2019t find her body, so they know he done it.\u201d\nSexton averred that after he was released from prison in August 1999, he continued to see defendant at a halfway house at meals. Sexton explained that defendant was released from prison before him, and that when Sexton went to live in the halfway house, defendant had already moved out, but that he continued to visit Sexton there. Sexton remained in the halfway house for about S1/2 to 4 months. After that, he lived with defendant for a few weeks. According to Sexton, sometime in November or December of 1999, while living with defendant, Sexton had another \u201cunusual conversation with defendant about a girl.\u201d Defendant and Sexton were in a bar on Milwaukee Avenue sometime before 10 p.m., reminiscing about their days in the Oxford penitentiary when defendant started talking about how he should have gotten out of prison earlier. When Sexton asked defendant what he was talking about, defendant said, \u201cI should have been out earlier. I should have won my appeal but the lady shot it down because of the murder charge and the bitch [is still haunting me].\u201d\nDefendant then told Sexton that he had been out with a girl and \u25a0that they had done drugs together. Defendant told Sexton that they had snorted \u201ctic,\u201d but that the girl had thought it was cocaine. Sexton testified that defendant told him that after the girl took the \u201ctic,\u201d she became \u201chysterical, uncontrollable,\u201d and that he had to handcuff her to a radiator. According to Sexton, defendant told him that he then had sex with the girl but that she was \u201ca dead f \u2014 k.\u201d Defendant then told Sexton that afterwards the girl was just \u201clying on the floor\u201d and was incoherent and that he did not know whether she was alive or dead. Defendant told Sexton that \u201che had to make sure *** because he couldn\u2019t take another hit like that.\u201d While saying this, defendant made a strangling motion with his hands. When Sexton told defendant that he should not be talking about these things, defendant replied \u201cWell, I\u2019m not worried about it because they\u2019ll never find a piece of the bitch.\u201d Sexton admitted that at this time he did not know whether the story defendant had told him was true.\nSexton acknowledged that he did not call the police when defendant told him this story. He averred that the first time he told anyone about what he had heard was when he was arrested by United States marshals in Indiana on August 22, 2000, for violation of his supervised release. Sexton admitted that he told the United States marshals what defendant had told him because he was angry at defendant. Sexton believed that defendant had told the United States marshals where Sexton was, and therefore, while riding in the car with the marshals he stated, \u201cImagine that a guy who goes around bragging about killing a girl is telling on me.\u201d\nSexton testified that he received no deals or promises for his testimony in the present case, but acknowledged that the assistant State\u2019s Attorney did tell him that he would write a letter to the United States Attorney\u2019s office telling them about Sexton\u2019s cooperation in the present trial. Sexton admitted that he was eligible for a period of 21 to 27 months\u2019 imprisonment for his violation of the supervised release, but that at sentencing he received only 14 months with drug treatment. Sexton further stated that he also had a possession of a controlled substance case pending at that time, and that although no promises or deals were made with respect to that case, in return for his testimony in defendant\u2019s trial, that case was nol-prossed in November 2000, while Sexton was in federal custody.\nOn cross-examination, Sexton admitted that he escaped from electronic monitoring and home confinement in Cook County, but stated that no charges related to the escape or home confinement violation were ever brought against him. Sexton also admitted that he had heroin when he was arrested on August 22, 2000, but that no charges were ever brought for that as well. Sexton also admitted that he later found out that defendant had not turned him in to the United States marshals.\nOn cross-examination, defense counsel asked Sexton whether in 1998 he \u201cgot his hands\u201d on a 15-page document prepared by the federal government in prosecuting defendant, from which he put together the evidence to which he testified in court. Sexton indicated that he had never seen or read any such document, or any paperwork on defendant\u2019s case, for that matter, at all. Sexton, however, then acknowledged that he did not immediately go to the authorities when defendant first told him about the crime and that he waited until 2000, when he was arrested for his violation of probation, to tell Federal Marshal John Ambrose. Sexton stated that he initially thought that he was arrested because defendant had \u201cturned him in\u201d and that Federal Marshal John Ambrose had led him to believe so. Sexton, however, testified that \u201cregardless, after I found out that [defendant]\u2014 you know, I mean that he really did do this to the girl, that\u2019s when I decided to turn because I thought he was lying about it.\u201d When defense counsel asked Sexton who told him that defendant had \u201creally done this,\u201d Sexton indicated that it was the police.\nMichael Reinke next testified that in 1984 he was friends with Panisi, who then went by the name of \u201cGymshoe.\u201d Reinke explained that he and Panisi grew up in the same neighborhood around Chicago and Western Avenues. According to Reinke, sometime in February 1984, he had an unusual conversation with Panisi in the Ideal Liquors tavern on Chicago and Damen. Over defense counsel\u2019s renewed objection to this line of questioning, Reinke was permitted to testify that on that night in the tavern, Panisi told him that he had seen a girl \u201ctied up\u201d to a radiator. Reinke also recalled that Panisi said something about a red sock in the girl\u2019s mouth. Reinke told Panisi to call the police if he wanted to and to stop talking about it. Reinke acknowledged that at that time he was getting ready to go to prison himself on an aggravated battery conviction.\nDavid Harold next testified that in 1984 he met defendant through Dori Garrity. Harold stated that he also met Marcy Andrews and Gay Dell through Dori. In 1984 Harold had known Marcy for about two or three years. Harold testified that in the afternoon of Valentine\u2019s Day 1984, he went to defendant\u2019s apartment on the second floor at Iowa and Rockwell to buy drugs. Harold saw defendant, Marcy, Gay and Dori there. Harold only stopped by for a few minutes, bought drugs and left.\nHarold further testified that on the following day he returned to defendant\u2019s apartment for more drugs. At about 4 or 4:30 p.m., Harold was on his way to work at Mack Truck, on the south side of Chicago, and stopped by defendant\u2019s apartment only for a few minutes. Harold\u2019s mother-in-law, who also worked at Mack Truck, remained in Harold\u2019s car, while Harold went up to defendant\u2019s apartment to buy the drugs. Harold averred that once in the apartment, he saw Marcy naked on the bed. Marcy got up and started to walk toward Harold, but she was stumbling, and Harold could tell she was \u201cmessed up,\u201d from having taken \u201ctic.\u201d Harold testified that he told defendant to give Marcy some milk or orange juice because he had heard that would help someone who was \u201chigh\u201d on \u201ctic.\u201d Harold averred that he left soon thereafter because he had to go to work, but that he told defendant to make sure to take care of Marcy, and defendant said that he would.\nOn cross-examination, Harold admitted that in 1984 he was a \u201ctic\u201d and cocaine user and that he would frequent Montrose Harbor to buy drugs and meet other people. Harold also acknowledged that he knew that Marcy, Dori and Gay frequented Montrose Harbor for the same reason. Harold admitted that he never saw Marcy chained to a radiator or tied up in any way.\nDefendant\u2019s ex-wife, Debra Krystyn, next testified that in February 1984 she was married to defendant. In February 1984, she and defendant had been separated for about a month and a half, and she was not living with him in the second-floor apartment at 2558 West Iowa. Krystyn and defendant got back together for a short period of time later that spring. Krystyn testified that while she was married to defendant, he owned five cars and a motorcycle. Krystyn averred that defendant\u2019s mother owned the building where defendant lived and that she herself lived on the first floor. According to Krystyn, defendant\u2019s mother owned a vehicle too. Krystyn also testified that prior to February 1984 defendant owned a pair of handcuffs but that after February of that year she never saw them again. Krystyn finally acknowledged that there was a radiator in the kitchen of defendant\u2019s apartment close to the window. After the testimony of Krystyn, the State rested.\nDefense counsel called Fred Moreno as his only witness. Moreno testified that he is currently employed as an investigator for the Cook County State\u2019s Attorney\u2019s office, but that in 1984 he worked as a Chicago police officer. Moreno testified that at 12:50 p.m., on February 18, 1984, he arrested Michael Panisi and placed him in custody for the theft of a car radio. Moreno averred that when he arrested Panisi and took him to the police station, Panisi at no time told him about having seen a body or a woman in a drugged condition.\nMoreno also testified that around 12:50 p.m. on February 18, 1984, together with Panisi he also arrested Michael Reinke. According to Moreno, Reinke did not tell him anything about a woman who was in trouble or a woman who was handcuffed to a radiator. After Moreno\u2019s testimony the defense rested.\nThe State and defense counsel then presented closing arguments. After hearing all the evidence in the case, the jury found defendant guilty of first degree murder and also concluded that the victim was killed in the course of the felony of aggravated kidnaping.\nFollowing defendant\u2019s conviction, on August 29, 2005, the defense subpoenaed Michael Panisi\u2019s military records and requested a continuance in order to file a posttrial motion. During a hearing on that continuance, defense counsel informed the court that Panisi\u2019s military records were subpoenaed after trial because the State had provided no notice of Panisi\u2019s military service to defendant prior to trial. The assistant State\u2019s Attorney denied knowing Panisi\u2019s military service prior to trial and indicated that he first spoke to Panisi after Panisi was flown to Illinois from Las Vegas for the trial. The assistant State\u2019s Attorney stated that he only became aware of Panisi\u2019s military service after jury selection and that he assumed that because defense counsel had interviewed Panisi in Las Vegas two months before trial, defense counsel was entirely apprised of Panisi\u2019s military record. The court granted defense counsel\u2019s motion for a continuance.\nOn September 28, 2005, defense counsel filed a motion for new trial pursuant to section 116 \u2014 1 of the Code of Criminal Procedure of 1963 (Code of Criminal Procedure) (725 ILCS 5/116 \u2014 1 (West 2000)), and pursuant to section 2 \u2014 1401 of the Code of Civil Procedure (735 ILCS 5/2 \u2014 1401 (West 2000)). To this motion for a new trial, defendant attached, inter alia, copies of Panisi\u2019s military records and defense counsel\u2019s correspondence with the relevant military authorities, which revealed that contrary to his testimony at trial, Panisi never became a \u201cgreen beret,\u201d never served three tours in Vietnam, and in fact never left the United States. The records revealed that Panisi enlisted in the army on May 19, 1971, at the age of 17. The records further revealed that in the summer of 1972, Panisi disappeared and went \u201cabsent without official leave\u201d (AWOL) for almost three months. As a result, Panisi was served with court-martial charges, and after conferring with JAG counsel, on June 13, 1972, requested a voluntary discharge from the military \u201cfor the good of the service.\u201d Instead, Panisi received an undesirable discharge in lieu of a court martial. Panisi later petitioned to have this undesirable discharge converted to a general discharge, but his request was denied by the Army Discharge Review Board on March 1, 1982.\nAt the hearing on defendant\u2019s motion for a new trial, pursuant to a subpoena the State presented the testimony of defense counsel\u2019s investigator, Quentin Hall. Hall testified that he accompanied defense counsel to Las Vegas and was present when defense counsel interviewed Panisi on June 27 and June 28, 2005. Hall stated that he did not remember Panisi saying anything about his military background during those interviews. At the State\u2019s request, Hall also produced a \u201ccase status\u201d memorandum which he had prepared regarding the interview and tendered it to the court. This document, however, revealed no mention of Panisi\u2019s military record.\nAfter hearing arguments by both counsel regarding the motion for a new trial, the circuit court denied defendant\u2019s motion. In doing so, the court did not specifically address any of the motion\u2019s allegations, but simply stated, \u201cThere were no errors that require a new trial. The motion for new trial is denied.\u201d\nAt the subsequent sentencing hearing, the court sentenced defendant to natural life imprisonment, concluding that \u201cthe only sentence, in light of the record, that will protect the public and be of any rehabilitative benefit to defendant is either his death or lifetime incapacitation. Of the two, only incapacitation is allowed by law.\u201d Defendant now appeals.\nI. ANALYSIS\nA. Sufficiency of the Evidence\nWe first address defendant\u2019s contention that the State failed to prove him guilty of first degree murder beyond a reasonable doubt. When considering a challenge to the sufficiency of the evidence, the relevant question on appeal is whether, after viewing the evidence in the light most favorable to the prosecution, any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt. People v. Hall, 194 Ill. 2d 305, 330, 743 N.E.2d 521, 537 (2000). The weight to be given the testimony, the credibility of the witnesses, the resolution of conflicting testimony, and the reasonable inferences to be drawn from the evidence are the responsibility of the trier of fact. People v. Walensky, 286 Ill. App. 3d 82, 97, 675 N.E.2d 952, 962 (1996); People v. Milka, 211 Ill. 2d 150, 178, 810 N.E.2d 33, 49 (2004). A reviewing court will not set aside a criminal conviction unless the evidence is so unreasonable, improbable, or unsatisfactory as to justify reasonable doubt of the defendant\u2019s guilt. Hall, 194 Ill. 2d at 330, 743 N.E.2d at 537.\nIn the present case, defendant\u2019s sufficiency of evidence argument is predicated solely on his contention that the State failed to present evidence that satisfies the corpus delicti rule. Specifically, defendant asserts that the State failed to present sufficient evidence independent of defendant\u2019s own confession, i.e., his third-party statements to Panisi and Sexton, which tend to prove the existence of the crime\u2014 Marcy\u2019s death. The State initially argues that the requirement of a corpus delicti is inconsistent with the constitutionally based standard of review for sufficiency of evidence as articulated in Jackson v. Virginia, 443 U.S. 307, 317-18, 61 L. Ed. 2d 560, 572-73, 99 S. Ct. 2781, 2788-89 (1979), and adopted by our supreme court and that therefore we should abolish it. Alternatively, the State contends that even with the corpus delicti rule in place, defendant\u2019s conviction must stand. For the reasons that follow, we find that the evidence presented at trial satisfied the corpus delicti rule and was sufficient to find defendant guilty of first degree murder.\nWe first note that our supreme court has explained the notion of corpus delicti in the following manner:\n\u201cProof of guilt for a criminal offense may be divided conceptually into proof that an injury or loss occurred, that the cause of the loss was criminal in nature, and that the accused was the offender. (7 J. Wigmore, Evidence \u00a72071, at 524 (Chadbourn rev. 1978).) By common acceptation, the first two components \u2014 the occurrence of the injury or loss, and its causation by criminal conduct \u2014 are termed the corpus delicti; the identity of the accused as the offender, the ultimate issue, is not considered part of the corpus delicti. [Citations.] The elements of an offense must, of course, be proved beyond a reasonable doubt.\u201d People v. Furby, 138 Ill. 2d 434, 445-46, 563 N.E.2d 421, 425-26 (1990).\nIn the present case, defendant was convicted of first degree murder. See 720 ILCS 5/9 \u2014 1(a)(1) (West 2000). As such, in order to establish the corpus delicti of the crime, the State was required to prove beyond a reasonable doubt both: (1) the fact of death, and (2) the fact that the death was produced by the criminal agency of some person. See People v. Holmes, 67 Ill. 2d 236, 239, 367 N.E.2d 663, 665 (1977); see also People v. Fuller, 141 Ill. App. 3d 737, 748, 490 N.E.2d 977, 986 (1986).\nIt is generally held that proof of corpus delicti may not rest exclusively on a defendant\u2019s extrajudicial confession, admission, or other incriminating statement. Furby, 138 Ill. 2d at 446, 563 N.E.2d at 425-26. Rather, the State must present evidence \u201caliunde the defendant\u2019s confession that tends to show the commission of the offense and is corroborative of the circumstances related in the statement.\u201d Furby, 138 Ill. 2d at 446, 563 N.E.2d at 425-26, citing People v. Lambert, 104 Ill. 2d 375, 378-79, 472 N.E.2d 427 (1984), and People v. Dalton, 91 Ill. 2d 22, 29, 434 N.E.2d 1127 (1982). \u201c[I]f the independent evidence tends to prove that an offense occurred, then such evidence, if corroborative of the facts contained in the confession, may be considered along with the confession in establishing the corpus delicti.\u201d (Emphasis in original.) People v. Willingham, 89 Ill. 2d 352, 361, 432 N.E.2d 861, 865 (1982). In such an event, the independent evidence need not establish beyond a reasonable doubt that an offense did occur. Willingham, 89 Ill. 2d at 361, 432 N.E.2d at 865. The determination whether there is sufficient independent proof of the corpus delicti is judged by the particular circumstances of the case. Furby, 138 Ill. 2d at 450, 563 N.E.2d at 428, citing People v. Millard, 370 Ill. 214, 218, 18 N.E.2d 211 (1938).\nAfter a review of the record below, we find that in the present case, the evidence independent of defendant\u2019s extrajudicial confessions tended to prove the commission of the charged offense, i.e., first degree murder, and sufficiently corroborated defendant\u2019s confessions so as to permit the use of those confessions to establish the corpus delicti. See Willingham, 89 Ill. 2d at 361, 432 N.E.2d at 865.\nThe record reveals that independent evidence showed that defendant was the last person to be seen with Marcy when she was alive. According to the trial transcript, two witnesses, both Dori and Gay, testified that after a car accident in the evening hours of February 14, 1984, in which Marcy badly injured her ankle so that she could not walk, defendant took Marcy to his home under the pretense that he would take her to the hospital. Both Dori and Gay testified that after avoiding their telephone calls on that same night, defendant finally allowed them to speak to Marcy, who was inside his apartment. Both Dori and Gay testified that Marcy sounded drugged and scared and that she asked them to come and get her out of defendant\u2019s apartment. Both Dori and Gay also averred that when they attempted to go to defendant\u2019s apartment and find Marcy, defendant first refused to open the door and let them go upstairs to see if Marcy was there and later came downstairs and threatened to kill the girls and throw battery acid in their faces.\nMoreover, two eyewitnesses, Panisi and Harold, testified that they observed Marcy drugged and naked in defendant\u2019s apartment in the days following February 14, 1984. Specifically, Harold, who had known Marcy for about two to three years, testified that on February 15, 1984, he stopped by defendant\u2019s apartment to buy drugs and observed Marcy naked on the bed. Marcy got up and started to walk toward Harold but she stumbled. Harold averred that Marcy was \u201cmessed up\u201d from having taken THC.\nSimilarly, Panisi testified that around Valentine\u2019s Day 1984, he went to defendant\u2019s apartment to buy drugs and observed a naked girl handcuffed to a radiator, who was all \u201cscr \u2014 d up on *** drugs.\u201d Panisi\u2019s testimony regarding the handcuffs was corroborated by defendant\u2019s ex-wife, Debra Krystyn, who averred at trial that in the winter of 1984, her husband owned a pair of handcuffs, but that after February 14, 1984, she never saw the handcuffs again. The record further reveals that Panisi testified that when he came to defendant\u2019s apartment on the following day, he observed the same girl sitting naked next to defendant on his couch and watched as defendant forced the girl to perform oral sex on one of his customers. Panisi looked in the girl\u2019s wallet and saw that her name was \u201cMarcy.\u201d When he came to defendant\u2019s apartment to buy drugs for a third time, Panisi observed Marcy\u2019s body in a blanket or carpet, and then he watched defendant put the body over his shoulder, take it downstairs, and put it inside the trunk of a car.\nIn addition, Sara, Marcy\u2019s mother, testified in detail to the exhaustive efforts she undertook to find her daughter over the years. Sara also testified that Marcy was a girl who kept in constant contact with her family and who was close to her mother. Sara also averred that Marcy had made plans and made efforts to move to Paducah and attend community college near where her aunt lived.\nWe find that the aforementioned independent evidence sufficiently tended to show that Marcy Andrews did not merely disappear but rather that she was killed sometime between February 14 and February 18, 1984. See Furby, 138 Ill. 2d at 450-51, 563 N.E.2d at 428 (holding that it was not necessary that the independent evidence disprove every possibility, other than theft, that might have explained the disappearance of the case, so as to permit the use of defendants\u2019 confessions to prove corpus delicti of theft).\nWe also conclude that the independent evidence strongly corroborated the circumstances related in defendant\u2019s incriminating statements to Panisi and Sexton. In that respect we note that our supreme court has held that there is no requirement that the independent evidence and the details of the confession correspond in every particular detail; rather, what is necessary are facts or circumstances independent of the confession and consistent with the confession that tend to confirm and strengthen the confession. See Furby, 138 Ill. 2d at 452, 563 N.E.2d at 428, citing People v. Lueder, 3 Ill. 2d 487, 489, 121 N.E.2d 743 (1954).\nHere, the record reveals that when Panisi first went to defendant\u2019s apartment, and observed the naked girl chained to the radiator, defendant told him that the girl had taken THC. This statement was corroborated by Don\u2019s and Gay\u2019s testimony that when they last spoke on the telephone to Marcy, who was in defendant\u2019s apartment, she spoke incoherently and \u201cappeared\u201d to be on \u201ctic.\u201d In addition, on the second day at defendant\u2019s house, defendant told Panisi that he and the girl were snorting drugs together and that he had tricked the girl by telling her that she was taking cocaine, while in fact she was consuming the much more potent THC. Defendant said that he had tricked the girl because \u201cshe screwed up his mama\u2019s car,\u201d when she grabbed his steering wheel and made him crash it. This statement was corroborated by the testimony of both Dori and Gay, who averred that after the car accident, defendant screamed at them, calling them \u201cbitches,\u201d because he blamed them for the state of his car.\nDefendant\u2019s confession to Sexton is similarly corroborated and strengthened by the independent evidence presented at trial. Defendant told Sexton that he had been out with a girl and that they had done drugs together. Defendant told Sexton that they had taken \u201ctic\u201d but that the girl believed it to be cocaine, and that after she realized it was not, she became \u201chysterical, uncontrollable,\u201d so that he had to handcuff her to a radiator. This statement is corroborated by Panisi\u2019s testimony that around Valentine\u2019s Day 1984, he observed a girl, whose name was Marcy and who was drugged, naked and handcuffed to a radiator in defendant\u2019s kitchen. Defendant also told Sexton that he then had sex with the girl and that afterward she was \u201cjust lying on the floor,\u201d incoherent, and that he had to check whether she was alive or dead \u201cbecause he couldn\u2019t take another hit like that.\u201d While saying this, defendant made a strangling motion with his hands. This statement is corroborated by Panisi\u2019s testimony that on his third visit to defendant\u2019s apartment, around Valentine\u2019s Day 1984, he observed Marcy\u2019s dead body in a carpet or rug, and then defendant taking the body, putting it into the trunk of his car, and driving off.\nAs such, because the independent evidence both tended to show the commission of the offense and strongly corroborated defendant\u2019s confessions, we may consider defendant\u2019s confessions in determining whether the State proved corpus delicti beyond a reasonable doubt. See Holmes, 67 Ill. 2d at 239-40, 367 N.E.2d at 665 (holding that because the independent evidence need not be sufficient by itself to connect the defendant to the offense, a bartender\u2019s testimony that a patron of the lounge was shot while opening the door for someone, together with a stipulation that this patron died as a result of such wounds, was sufficient evidence aliunde defendant\u2019s confession to permit the use of defendant\u2019s confession to establish the corpus delicti in murder prosecution); People v. Norcutt, 44 Ill. 2d 256, 263-64, 255 N.E.2d 442, 446-47 (1970) (holding that evidence in arson prosecution, apart from defendant\u2019s confession to police, namely, that he lived in the vicinity of the two buildings that caught fire within hours of each other, and that he had previously pled guilty to two indictments of arson committed a year before, tended to show that the crime did in fact occur so as to permit the use of defendant\u2019s confession to establish corpus delicti)-, see also Willingham, 89 Ill. 2d at 362, 432 N.E.2d at 865-66 (holding that in a prosecution for murder and robbery, independent evidence, i.e., eyewitness testimony that a gold Camaro pulled up in the victim\u2019s building\u2019s parking lot, a man walked out of the car, spoke to the witness about the weather, then entered the victim\u2019s apartment and a few minutes later came out of the apartment with another man, then returned upstairs, followed by a \u201cpop noise\u201d and two men fleeing, corroborated defendant\u2019s confession, albeit not in every single detail, so as to permit the use of defendant\u2019s confession to prove corpus delicti).\nApplying the aforementioned principles to the case at bar, we conclude that the evidence, when viewed in the light most favorable to the prosecution, was sufficient to establish corpus delicti, so as to sustain defendant\u2019s conviction of first degree murder. As already discussed in detail above, defendant, in his confessions to Panisi and Sexton, admitted his involvement in the crime. Specifically, defendant told both Panisi and Sexton that he tricked the girl into taking a large dose of the potent and possibly deadly THC. Defendant told both Panisi and Sexton that after the girl took the drugs she became incoherent and started stumbling around the apartment and that he had to handcuff her to the radiator. Panisi actually observed Marcy tied to such a radiator. Defendant then showed Sexton that he killed the girl by strangling her and indicated that he did so because after they had sex he did not know whether she was dead or alive, and he needed to \u201cmake sure,\u201d \u201cbecause he couldn\u2019t take another hit like that.\u201d Moreover, when Panisi observed Marcy\u2019s body rolled up in a carpet on his third visit to defendant\u2019s apartment, defendant told him, \u201cshe\u2019s died on me man,\u201d and he asked Panisi to help him dispose of the body. When Panisi refused, defendant put the body in the trunk of his mother\u2019s car, swore at Panisi and drove off. More overridingly, defendant later bragged to Sexton that he was not worried about being caught \u201cbecause they\u2019ll never find a piece of the bitch.\u201d The jurors were made aware of the circumstances under which defendant made the incriminating statements to Panisi and Sexton, as well as the relationship that defendant had with each witness. It was the jury\u2019s function to determine the credibility of those witnesses, to resolve any conflicting testimony, and to determine how any flaws in part of a witness\u2019s testimony affected the credibility of the whole. People v. Jones, 295 Ill. App. 3d 444, 452, 692 N.E.2d 762, 768 (1998); People v. Cunningham, 212 Ill. 2d 274, 283, 818 N.E.2d 304, 309 (2004). The jurors were free to credit the testimony of Panisi and Sexton and to accept as true their accounts of defendant\u2019s confessions, as well as to accept as true the content of those confessions themselves. See Furby, 138 Ill. 2d at 456, 563 N.E.2d at 430.\nMoreover, as already noted above, independent circumstantial evidence corroborated defendant\u2019s involvement in the crime. Defendant was last seen inside his apartment with Marcy when she was alive. Marcy\u2019s friends Dori and Gay testified that while Marcy was at defendant\u2019s apartment she talked to them on the telephone, pleading that defendant was \u201cscaring her,\u201d and that they \u201cget her out of there.\u201d Dori and Gay further averred that when they tried to go to defendant\u2019s apartment to see if Marcy was there, defendant would not allow them into his apartment and, instead, threatened to kill them and \u201cthrow battery acid into their faces.\u201d Dori and Gay both testified that after that they never saw or heard from Marcy again. In addition, Marcy\u2019s mother testified to the exhaustive efforts she made in locating her daughter, as well as to Marcy\u2019s habit of continually remaining in contact with friends and family. In addition, defendant\u2019s confessions as well as the testimony of Dori and Gay provided a motive for defendant\u2019s actions, namely, that defendant wanted to punish Marcy because he believed that she was responsible for the car accident the night before. Viewing all of the evidence in the light most favorable to the State, we cannot say that defendant was not proved guilty beyond a reasonable doubt. Hall, 194 Ill. 2d at 330, 743 N.E.2d at 537.\nB. Ineffective Assistance of Counsel\nDefendant next contends that he was denied his right to effective assistance of counsel when counsel: (1) failed to introduce evidence of the theories of defense he advanced in his opening statement, and (2) failed to challenge Michael Panisi\u2019s competency to testify as a witness at trial. We disagree.\nWhether defendant was denied effective assistance of counsel is evaluated in accordance with the two-prong test set forth in Strickland v. Washington, 466 U.S. 668, 687-88, 80 L. Ed. 2d 674, 693, 104 S. Ct. 2052, 2064 (1984), and People v. Bloomingburg, 346 Ill. App. 3d 308, 316-17, 804 N.E.2d 638, 645 (2004). In reviewing claims of ineffective assistance of counsel, we use a bifurcated standard of review, wherein we defer to the trial court\u2019s findings of fact unless they are against the manifest weight of the evidence, but make a de novo assessment of the ultimate legal issue of whether counsel\u2019s actions support an ineffective assistance claim. People v. Berrier, 362 Ill. App. 3d 1153, 1166-67, 841 N.E.2d 1117, 1128-29 (2006); People v. Davis, 353 Ill. App. 3d 790, 794, 819 N.E.2d 1195, 1200 (2004). Because the facts surrounding defendant\u2019s claim here are undisputed, our review is de novo. Berrier, 362 Ill. App. 3d at 1167, 841 N.E.2d at 1128-29.\nThe right of the accused to effective assistance of counsel is provided by the sixth and fourteenth amendments of the United States Constitution. U.S. Const., amends. VI, XIV; People v. Conley, 118 Ill. App. 3d 122, 128, 454 N.E.2d 1107, 1113 (1983). Under Strickland, to prevail on a claim of ineffective assistance, defendant must show that (1) counsel\u2019s performance fell below an objective standard of reasonableness and (2) the deficient performance so prejudiced the defense as to deny defendant a fair trial. Strickland, 466 U.S. at 687, 80 L. Ed. 2d at 693, 104 S. Ct. at 2064; see also Bloomingburg, 346 Ill. App. 3d at 316-17, 804 N.E.2d at 645.\nAs to the first prong, defendant must overcome a strong presumption that, under the circumstances, the challenged action or inaction of counsel was a valid trial strategy. Bloomingburg, 346 Ill. App. 3d at 317, 804 N.E.2d at 645; 3 W. LaFave, J. Israel & N. King, Criminal Procedure \u00a711.10(c), at 715 (2d ed. 1999). The reasonableness of counsel\u2019s actions must be evaluated from counsel\u2019s perspective at the time of the alleged error, and without hindsight, in light of the totality of circumstances, and not just on the basis of isolated acts. People v. Kelly, 304 Ill. App. 3d 628, 634, 710 N.E.2d 163, 169 (1999). Because effective assistance refers to competent and not perfect representation (People v. Odle, 151 Ill. 2d 168, 173, 601 N.E.2d 732, 734-35 (1992)), mistakes in trial strategy or judgment will not, of themselves, render the representation incompetent (People v. Palmer, 162 Ill. 2d 465, 476, 643 N.E.2d 797, 801-02 (1994)).\nIn addition, even if an attorney\u2019s performance is deemed incompetent, under the second prong of Strickland, defendant must still show that he was prejudiced by counsel\u2019s errors. Strickland, 466 U.S. at 687, 80 L. Ed. 2d at 693, 104 S. Ct. at 2064. To show prejudice, defendant must establish that there is a reasonable probability that, but for counsel\u2019s unprofessional errors, the result of the proceedings would have been different, i.e., the fact finder would have entertained reasonable doubt as to defendant\u2019s guilt. Strickland, 466 U.S. at 694, 80 L. Ed. 2d at 698, 104 S. Ct. at 2068; Bloomingburg, 346 Ill. App. 3d at 317, 804 N.E.2d at 645.\n1. Counsel\u2019s Failure to Present Evidence Promised in His Opening Statements\nDefendant first contends that defense counsel\u2019s failure to present evidence promised in his opening statement was objectively unreasonable. For the reasons that follow, we find that defense counsel\u2019s actions constituted valid trial strategy. See Bloomingburg, 346 Ill. App. 3d at 317, 804 N.E.2d at 645.\nSpecifically, defendant initially contends that in his opening statement, defense counsel suggested that because the State never found or produced Marcy\u2019s body, Marcy might not even be dead, but rather \u201cmay have wanted to go back to a simpler time in her life,\u201d taking advantage of the fact that her birth certificate listed her name as Prather. Defendant contends that counsel\u2019s argument was improper because during trial counsel never introduced evidence that Marcy intended to \u201cgo back to a simpler time in her life.\u201d We disagree.\nWe find nothing objectively unreasonable in this line of counsel\u2019s argument. First, counsel was correct in arguing that Marcy\u2019s body was never found, as the State conceded this fact in its opening argument. As the assistant State\u2019s Attorney argued, \u201cLadies, and gentlemen, to this day, nobody has ever found the body of Marcy Andrews. *** You will hear no evidence that she has ever been found.\u201d Moreover, on cross-examination, the victim\u2019s mother, Sara Andrews, did in fact testify that Marcy\u2019s birth name was Prather and that she had been going through a difficult stage in her life, having recently finished an alcohol rehabilitation program, during which time she found and attempted to reach out to her biological father, James Prather. As such, defendant\u2019s contention that defense counsel failed to present any evidence of the fact that Marcy may have \u201cwanted to go back to a simpler life\u201d is rebutted by the record and, therefore, simply incorrect.\nDefendant next contends that in his opening statements, defense counsel gratuitously referred to a report detailing Marcy\u2019s murder, prepared by the federal government for the sentencing of defendant in an unrelated federal counterfeiting charge. Defendant asserts that although counsel attempted to attribute the source of defendant\u2019s confession to Sexton to that report, thereby negating that Sexton heard any of the facts from defendant himself, counsel never in fact introduced that report into evidence at trial. A review of the record reveals that counsel did in fact, albeit unsuccessfully, attempt to elicit such evidence at trial and that his actions were strategically made in the hope of negating defendant\u2019s third-party confession to Sexton. During his opening argument, counsel argued that Sexton was a \u201ccareer criminal\u201d who found out \u201csome dirt\u201d about defendant and \u201cstored it away for a rainy day.\u201d Defense counsel further argued that Sexton had become aware of the details of Marcy\u2019s murder, as well as the details of defendant\u2019s counterfeiting case, not by hearing them from defendant, but \u201cthrough the prison grapevine.\u201d Later in his argument, counsel stated that \u201cthere is a way that Roger Sexton found out everything Michael Panfisi] had to say, and you are going to hear that during the course of the trial.\u201d Later during trial, defense counsel did in fact attempt to elicit this information. First, on cross-examination, defense counsel questioned Sexton as to his prior convictions and criminal record. Defense counsel then asked Sexton whether in 1998 he \u201cgot his hands\u201d on a 15-page document prepared by the federal government in prosecuting defendant, from which he put together the evidence to which he testified in court. Although Sexton indicated that he had never seen or read any such document, or any paperwork at all regarding defendant\u2019s case, he did acknowledge that he did not immediately report defendant to the authorities, but that he waited until 2000 to do so, after he became angry at defendant, mistakenly believing that defendant had \u201cturned him in,\u201d and after \u201cthe police officers\u201d told him that defendant \u201chad really done this.\u201d\nDefendant nevertheless also contends that in his opening statement, defense counsel argued that this entire case was driven by the personal ambition of \u201ca young marshal by the name of John Ambrose who the State should call [as a witness], but I have no control over who they call or who they don\u2019t,\u201d but then never presented evidence to that effect. Specifically, defendant contends that in propounding this theory of defense, on two occasions, counsel indicated that Ambrose would testify at trial: first, counsel stated that Ambrose would tell the jury about how under the guise of a ruse he arrested and then spoke to defendant and, then later, that Ambrose would tell them that while federal marshals generally do not participate in state murder investigations, he received special permission from his supervisor in this case. Counsel expanded upon Ambrose\u2019s role in the investigation, suggesting that his ambition drove a dormant investigation forward and led to the search of defendant\u2019s mother\u2019s farm and, ultimately, defendant\u2019s arrest. Defendant asserts, however, that counsel\u2019s failure to call John Ambrose as a witness was objectively unreasonable and that he was prejudiced when John Ambrose did not testify at trial, on behalf of either the State or the defense. We disagree.\nWe first note that although we agree with defendant that counsel\u2019s failure to fulfill his promise to present evidence referred to in his opening statement can constitute ineffective assistance of counsel (see People v. Chandler, 129 Ill. 2d 233, 246-48, 543 N.E.2d 1290, 1295 (1989); People v. Ortiz, 224 Ill. App. 3d 1065, 1073, 566 N.E.2d 1384, 1389 (1992); People v. Briones, 352 Ill. App. 3d 913, 918-19, 816 N.E.2d 1120, 1124-25 (2004), citing United States ex rel. Hampton v. Leibach, 347 F.3d 219, 257 (7th Cir. 2003); People v. Patterson, 192 Ill. 2d 93, 735 N.E.2d 616 (2000)), in the present case, contrary to defendant\u2019s assertions, counsel\u2019s decision not to call Ambrose as a witness was not per se unreasonable. We have previously held that defense counsel\u2019s decision to call or not to call witnesses is presumed to be a tactical choice which will not support an ineffectiveness claim. See People v. Whittaker, 199 Ill. App. 3d 621, 628, 557 N.E.2d 468, 472-73 (1990); see also People v. Consago, 170 Ill. App. 3d 982, 988, 524 N.E.2d 989, 993 (1988) (\u201cdefendant has the burden of overcoming the presumption that a decision to not call a witness is within the realm of trial strategy\u201d). In the present case, defendant has not overcome that presumption.\nHere, contrary to defendant\u2019s assertions, some evidence of the investigation being driven by federal marshal John Ambrose was introduced at trial through the cross-examination of Sexton. While cross-examining this witness, defense counsel on a number of occasions attempted to elicit from Sexton that Ambrose had tricked Sexton into thinking that defendant had \u201cturned him in,\u201d so as to get Sexton, \u201ca career criminal,\u201d angry and turn against defendant. In addition, on cross-examination, defense counsel attempted to ask Sexton whether he was aware that federal marshals generally do not participate in state murder investigations, but the State\u2019s objection to this question was sustained by the court. With this evidence and line of argument, defense counsel was able, at the very least, to plant a seed in the jury\u2019s mind negating the credibility of Sexton as a witness and to leave a reasonable doubt in the jury\u2019s mind that defendant was being framed by an ambitious federal marshal. In addition, defense counsel may have encountered a problem during trial and may very well have discarded Ambrose as an unfavorable witness, who, being the investigating officer in the case, might potentially lend more support to the State\u2019s case than to defendant\u2019s.\nHowever, even if we were to hold that counsel\u2019s conduct was unreasonable under the present circumstances, in light of the overwhelming evidence of defendant\u2019s guilt, discussed in more detail above, we would nevertheless find that defendant cannot satisfy the second prong of the Strickland test. See Strickland, 466 U.S. at 694, 80 L. Ed. 2d at 698, 104 S. Ct. at 2068; Bloomingburg, 346 Ill. App. 3d at 317, 804 N.E.2d at 645. The evidence presented at trial was not close. In addition to defendant\u2019s detailed confessions to Panisi and Sexton, circumstantial evidence corroborated defendant\u2019s involvement in the crime. Defendant was last seen with Marcy when she was alive. Two eyewitnesses testified that they observed Marcy in defendant\u2019s apartment and that she was naked, drugged and incoherent. Marcy\u2019s friends Dori and Gay testified that while Marcy was at defendant\u2019s apartment she talked to them on the telephone, indicating that defendant was \u201cscaring her\u201d and pleading that they \u201cget her out of there.\u201d Dori and Gay further averred that defendant would not allow them into his apartment, and that he threatened to kill them, when they tried to go inside to see if Marcy was there. Dori and Gay both testified that after that they never saw or heard from Marcy again. Moreover, Panisi testified that on his third visit to defendant\u2019s apartment, he observed Marcy\u2019s body rolled up in a carpet and he watched as defendant put the body inside the trunk of defendant\u2019s car and drive off. In addition, Marcy\u2019s mother testified to the exhaustive efforts she made in locating her daughter, as well as to Marcy\u2019s habit of continually remaining in contact with friends and family. In light of this overwhelming evidence, we find that there is no reasonable probability that but for counsel\u2019s failures, the jury would have entertained reasonable doubt as to defendant\u2019s guilt. Strickland, 466 U.S. at 694, 80 L. Ed. 2d at 698, 104 S. Ct. at 2068; Bloomingburg, 346 Ill. App. 3d at 317, 804 N.E.2d at 645.\n2. Counsel\u2019s Failure to Challenge Panisi\u2019s Competency to Testify at Trial\nDefendant also contends that he was denied effective assistance of counsel because counsel failed to challenge the competency of the State\u2019s key eyewitness, Michael Panisi, to testify at trial, both before trial or in a posttrial motion after the witness\u2019s testimony. Specifically, defendant asserts that defense counsel should have challenged Panisi\u2019s competency on two grounds: (1) his mental inability to receive correct impressions and to recall testimony given on direct examination, and (2) his inability to appreciate the moral duty to tell the truth. As shall be discussed more fully below, we find that counsel\u2019s decision not to challenge Panisi\u2019s competency could well have been predicated upon sound trial strategy, since under the current state of the law in Illinois, there was very little chance that Panisi would have been found incompetent to testify at trial.\nIn that respect, we note that in Illinois, all witnesses are presumed competent to testify. See 725 ILCS 5/115 \u2014 14(a) (West 2000); see also People v. Sutherland, 317 Ill. App. 3d 1117, 1124, 743 N.E.2d 1007, 1012-13 (2000); People v. Westpfahl, 295 Ill. App. 3d 327, 330-31, 692 N.E.2d 831, 834 (1998). Potential witnesses can be disqualified if they are (1) incapable of expressing themselves concerning the matter at hand, so as to be understood, or (2) incapable of understanding the duty of a witness to tell the truth. See 725 ILCS 1/115 \u2014 14(b)(1), (b)(2) (West 2000). The burden of proving that a witness is not competent to testify falls upon the party challenging the witness\u2019s ability to testify. See 725 ILCS 1/115 \u2014 14(c) (West 2000).\nWe first address defendant\u2019s contention that counsel should have challenged Panisi\u2019s competency because as a result of his past drug use, and his present mental illness, Panisi was mentally incapable of testifying at trial. Specifically defendant asserts that the record shows that Panisi\u2019s mental illness and drug abuse revealed that he could not recall events. Defendant contends that on cross-examination, Panisi testified that he could not recall exactly what he had testified to on direct, because he had not taken his \u201cmedication\u201d that day, and that he further admitted that he regularly takes lithium and Haldol for his bipolar disorder. We disagree.\nOur supreme court has long held that \u201cone mentally affected or ill is not incompetent if he understands the nature of an oath, and has sufficient mental power to give a correct account of what he has seen and heard.\u201d People v. Dixon, 22 Ill. 2d 513, 515-16, 177 N.E.2d 224, 225 (1961), citing People v. Enright, 256 Ill. 221, 230-31, 99 N.E. 36 (1912), and J. Wigmore, Evidence \u00a7501 (2d ed. 1923). If a witness has the capacity to observe, recollect and communicate, he is competent, despite the mental condition or ailment, and his mental deficiency may be considered only insofar as it affects his credibility as a witness. See Dixon, 22 Ill. 2d at 515-16, 177 N.E.2d at 225; see also People v. Rainge, 211 Ill. App. 3d 432, 446-47, 570 N.E.2d 431, 440 (1991), citing M. Graham, Cleary & Graham\u2019s Handbook of Illinois Evidence \u00a7601.3 (5th ed. 1990) (\u201cwhere a witness\u2019 mental capacity is called into question, the mental abnormality being inquired of must be relevant to attacking the witness\u2019 ability to perceive, record, recollect, or narrate. Otherwise, the question is one not of the competency of the witness, but the credit to be attached to his testimony\u201d).\nIn the present case defendant mischaracterizes the record with respect to Panisi\u2019s inability to recollect details as a result of his bipolar disorder. The record reveals that even though Panisi made a single statement during cross-examination as to his difficulty in recalling his earlier testimony on direct examination, after defense counsel refreshed his memory, Panisi immediately recalled his prior testimony and answered defense counsel\u2019s questions. In addition, the record nowhere else reflects that Panisi\u2019s mental condition affected his ability to perceive, record, recollect or narrate facts. In fact, the record shows that Panisi was able to recall statements that he had made in his grand jury testimony in 1985, nearly 15 years prior to his testimony. As such, we find it improbable that the circuit court would have disqualified defendant based on one lapse in memory and his bipolar disorder. See Rainge, 211 Ill. App. 3d at 446-47, 570 N.E.2d at 440 (holding that witness was properly permitted to testify at trial despite the testimony of a physician that she was suffering from an incident of acute schizophrenic reaction a week after the murders; concluding that any inconsistencies in the witness\u2019s testimony, including lapses of memory on cross-examination, did not show that she was incompetent to testify but, rather, went to her credibility); see also People v. Seel, 68 Ill. App. 3d 996, 1005, 386 N.E.2d 370, 377 (1979) (holding that a witness was properly permitted to testify in murder prosecution of defendant even though she had been hospitalized on four occasions for mental problems, where questions addressed to the witness indicated that she could recall events that occurred on the date of the murder and that she could relate those memories).\nIn addition, we disagree with defendant\u2019s contention that if challenged by counsel, Panisi would have been found incompetent to testify because of his prior drug abuse. We have previously held that \u201cthe ingestion of psychotropic medication does not give rise to a bona fide doubt as to a witness\u2019s competency,\u201d and that a counsel\u2019s failure to challenge a witness\u2019s competency on that ground does not constitute ineffective assistance of counsel. People v. Fikara, 345 Ill. App. 3d 144, 162, 802 N.E.2d 260, 274 (2003), citing People v. Mitchell, 189 Ill. 2d 312, 331, 727 N.E.2d 254 (2000); see also Dixon, 22 Ill. 2d at 515-16, 177 N.E.2d at 225 (holding that a habitual user of drugs is not rendered incompetent unless his mental capacity is impaired to such an extent that he cannot meet the qualifications of a witness).\nDefendant nevertheless contends that defense counsel was ineffective for not challenging Panisi\u2019s competency on the grounds of his inability to distinguish between a truth and a lie. In support of this contention, defendant cites to the fact that Panisi lied about his military record. Defendant acknowledges that prior to trial defense counsel could not have known about Panisi\u2019s \u201cinability to appreciate the moral duty to tell the truth,\u201d but argues that counsel was nevertheless ineffective because \u201cthis [inability] might have emerged had a competency hearing been held.\u201d We disagree.\nDefendant here fails to appreciate the difference between a witness\u2019s ability to understand his duty to tell the truth and his decision to ignore that duty. As the court in People v. Mason, 219 Ill. App. 3d 76, 81, 578 N.E.2d 1351, 1355 (1991), stated:\n\u201cSection 115 \u2014 4 suggests that intellectual rather than moral fitness is the true measure of witness competency. The witness competency statute indicates that a witness may be disqualified if she is incapable of understanding the duty to tell the truth [citation], but does not provide that a witness who is unlikely to tell the truth may be disqualified. The latter is a credibility determination best left to the trier of fact.\u201d\nMoreover, in practice, the competency bar with respect to understanding the difference between a truth and a lie is very low. See, e.g., People v. Dempsey, 242 Ill. App. 3d 568, 583-85, 610 N.E.2d 208, 218-19 (1993) (nine-year-old victim of sex abuse who testified he did not know the difference between truth and a lie was not automatically found to be incompetent); see also Sutherland, 317 Ill. App. 3d at 1125, 743 N.E.2d at 1012-13 (six-year-old shooting victim was found competent to testify in prosecution for attempted murder and battery with a firearm, even though she stated that \u201ctelling the truth made people \u2018happy\u2019 \u201d and lying made them \u201c \u2018mad\u2019 \u201d); People v. Velasco, 216 Ill. App. 3d 578, 586, 575 N.E.2d 954, 959 (1991) (31-year-old sexual assault victim who was afflicted with Down\u2019s syndrome was competent to testify; although confused at times, victim testified that she knew what the truth was and what a lie was and that she would not tell any lies). As such, we conclude that under the present circumstances, counsel could have reasonably concluded that it was unnecessary to challenge Panisi\u2019s competency as any such challenge would have had very little, if any at all, chance of success.\nC. Prosecutorial Misconduct\nDefendant next contends that he was denied his right to a fair trial because of several improper remarks made by the prosecutor in closing argument. We disagree.\nThe first question we must answer is whether this issue has been waived for purposes of appeal. In order to preserve an issue for appeal, defendant must first make an objection to the alleged error at trial and then raise it in a posttrial motion. People v. Enoch, 122 Ill. 2d 176, 186-87, 522 N.E.2d 1124, 1129-30 (1988). Defendant concedes that he failed to properly preserve this issue because even though he raised this issue in his posttrial motion, he failed to object to it at trial. However, he asks this court to review his claim under the plain error doctrine. 134 Ill. 2d R. 615(a); People v. Herron, 215 Ill. 2d 167, 186-87, 830 N.E.2d 467, 479 (2005).\nThe plain error doctrine bypasses normal forfeiture principles and allows a reviewing court to consider unpreserved error where either (1) the evidence is close, regardless of the seriousness of the error, or (2) the error is serious, regardless of the closeness of the evidence. Herron, 215 Ill. 2d at 186-87, 830 N.E.2d at 479. In the first instance, defendant must prove \u201cprejudicial error,\u201d i.e., that there was error and that the evidence was so closely balanced that the error alone severely threatened to tip the scales of justice against him. Herron, 215 Ill. 2d at 187, 830 N.E.2d at 479. Under the second prong of the plain error analysis, defendant must prove there was error and that the error was so serious that it affected the fairness of his trial and challenged the integrity of the judicial process. Herron, 215 Ill. 2d at 187, 830 N.E.2d at 479. In both instances, the burden of persuasion remains on the defendant. Herron, 215 Ill. 2d at 187, 830 N.E.2d at 479, citing People v. Hopp, 209 Ill. 2d 1, 12, 805 N.E.2d 1190 (2004).\nWe therefore first consider whether the complained-of prosecutor\u2019s remarks were made in error. In addressing this issue, we initially note that the prosecutor is afforded wide latitude in making closing arguments so long as his comments are based on the evidence or reasonable inferences therefrom. People v. Wilburn, 263 Ill. App. 3d 170, 181, 635 N.E.2d 877, 886 (1994). Reasonable inferences deducible from the evidence may be drawn even if they are unfavorable to defendant. Wilburn, 263 Ill. App. 3d at 181, 635 N.E.2d at 886, citing People v. Johnson, 149 Ill. 2d 118, 594 N.E.2d 253 (1992). To merit reversal, a prosecutor\u2019s improper comments must be of substantial magnitude such that they constituted a material factor in the defendant\u2019s conviction. Wilburn, 263 Ill. App. 3d at 181, 635 N.E.2d at 886, citing People v. Morgan, 142 Ill. 2d 410, 568 N.E.2d 755 (1991), rev\u2019d on other grounds, 504 U.S. 719, 119 L. Ed. 2d 492, 112 S. Ct. 222 (1992). Additionally, when a defendant alleges instances of prosecutorial misconduct, a reviewing court will examine the closing arguments of both the State and the defendant in their entirety and will place the objected-to comments in their proper context. People v. Enoch, 189 Ill. App. 3d 535, 548, 545 N.E.2d 429, 438-39 (1989).\nDefendant here first contends that he was denied a fair trial when during closing argument the prosecutor improperly shifted the burden of proof to defendant by making the following argument in rebuttal:\n\u201cAnd then he says they didn\u2019t call the police officers here, and maybe they didn\u2019t call the police officers because if they had called the police officers, those police officers would have said, oh, all these witnesses the State called are lying. You know, there\u2019s something, a document called a subpoena. You get it from the Court. You take the subpoena. You come to the clerk over here. You ask the clerk to stamp it, and then you have your investigator and go and deliver the subpoena to whatever police officer you want, and you can take it to any state that you want. There\u2019s a mechanism to bring everyone in. And, you know, they did, too. They brought in Moreno. They don\u2019t have a burden to prove anything, but they certainly had the power to bring in police officers if they believed that that was going to contradict any of these witnesses.\u201d\nIt is a fundamental principle of our justice system that the State has the burden of proving beyond a reasonable doubt all the material facts constituting the crime. People v. Carroll, 278 Ill. App. 3d 464, 467, 663 N.E.2d 458, 460-61 (1996). \u201cThe burden of such proof never shifts to the accused, but remains the responsibility of the prosecution throughout the trial.\u201d People v. Weinstein, 35 Ill. 2d 467, 470, 220 N.E.2d 432, 434 (1966); see also Carroll, 278 Ill. App. 3d at 467, 663 N.E.2d at 461 (\u201cIt is improper *** to suggest to the jury that the State had no burden of proof or to attempt to shift the burden to defendant\u201d).\nAn exception to this principle has been recognized where a prosecutor comments on evidence in response to comments by defense counsel which clearly invite a response. People v. Hudson, 157 Ill. 2d 401, 441, 626 N.E.2d 161, 178 (1993); People v. Mahaffey, 128 Ill. 2d 388, 425, 539 N.E.2d 1172, 1190 (1989); see also Wilburn, 263 Ill. App. 3d at 182, 635 N.E.2d at 886-87 (\u201c[i]t is axiomatic that a prosecutor may properly respond to comments made by defense counsel which clearly invite response\u201d); People v. Hunter, 331 Ill. App. 3d 1017, 1030, 772 N.E.2d 380, 390 (2002) (holding that a prosecutor\u2019s remarks are generally deemed proper if they have been invited or provoked by defendant); see also Enoch, 189 Ill. App. 3d at 548, 545 N.E.2d at 438-39 (\u201c[a] defendant should not be allowed to benefit from his own counsel\u2019s misconduct which invited the State\u2019s response\u201d); People v. Starks, 169 Ill. App. 3d 588, 600, 523 N.E.2d 983, 991 (1988), citing United States v. Young, 470 U.S. 1, 12-13, 84 L. Ed. 2d 1, 10-11, 105 S. Ct. 1038, 1045 (1985) (the \u201cinvited response\u201d doctrine allows a party who is provoked by his opponent\u2019s improper argument to \u201cright the scale\u201d by fighting fire with fire, in those situations where there are instances of impropriety in the initial argument)). In that respect we note that \u201creviewing courts in this State have consistently held that comment on the failure of a potential defense witness to testify is permitted when made in response to defense counsel\u2019s own reference to the State\u2019s failure to call the witness to the stand.\u201d People v. Holman, 103 Ill. 2d 133, 151, 469 N.E.2d 119, 128 (1984), citing People v. Smith, 24 Ill. 2d 198, 200, 181 N.E.2d 77, 78 (1962); People v. Izzo, 14 Ill. 2d 203, 213-14, 151 N.E.2d 329, 336 (1958); People v. Wheeler, 5 Ill. 2d 474, 485-86, 126 N.E.2d 228, 234 (1955).\nWhen read in context, it becomes apparent that the State\u2019s comments were justifiably made in response to the following remarks made by defense counsel in closing argument:\n\u201c[The State] didn\u2019t call one police officer, one federal marshal, one country trooper, one state police officer, one state\u2019s attorneys\u2019 investigator, one secret service agent, one FBI agent, not one.\u201d\nDefense counsel continued his argument with a long line of rhetorical questions about what could have been asked of all these potential witnesses who were never called to testify at trial. Defense counsel then concluded with, \u201c[The State] didn\u2019t bring you one minute of testimony from a police officer. Why is that? Why would they do that? Is it because the witnesses they brought in told so many different stories to so many different officers to so many different investigators that if they did, they would get chopped to pieces? They couldn\u2019t take that chance.\u201d It is apparent from the above that defense counsel was arguing that the State did not call the officers because the incidents described by Sexton and Panisi never occurred and that, pursuing this line of argument, defense counsel demanded that the State explain the officers\u2019 failure to testify.\nIn response to defense counsel\u2019s challenge, the State merely reminded the jurors of the power of compulsory process. Moreover, in doing so, counsel reminded the jurors of the proper burden of proof by stating that \u201c[defendant] d[oes]n\u2019t have a burden to prove anything.\u201d As such, because the comments were invited, they cannot be relied upon as error on appeal. See Smith, 24 Ill. 2d at 200, 181 N.E.2d at 78; Izzo, 14 Ill. 2d at 213-14, 151 N.E.2d at 336; Wheeler, 5 Ill. 2d at 485-86, 126 N.E.2d at 234; see also Mahaffey, 128 Ill. 2d at 425, 539 N.E.2d at 1190 (holding that prosecutor\u2019s statement during rebuttal closing argument that defendant\u2019s innocence was not the only inference that could be drawn from failure of the informant to testify and that defendant could have used compulsory process to secure informant\u2019s appearance if defendant truly believed that the informant\u2019s testimony would have been exculpatory were invited by defendant\u2019s closing argument in which defendant demanded that the State explain the informant\u2019s failure to appear at trial; as such, the statements were not made in error); Wilburn, 263 Ill. App. 3d at 184, 635 N.E.2d at 888 (holding that any error in prosecutor\u2019s remarks in rebuttal argument on defendant\u2019s failure to call two police officers who allegedly confiscated two knives from defendant approximately one hour before the stabbing with which defendant was charged were invited by defense counsel\u2019s comments in closing argument, which suggested that the State did not call the officers because the incident never occurred; the court held that the prosecutor merely reminded the jurors of defendant\u2019s power of compulsory process); Holman, 103 Ill. 2d at 151, 469 N.E.2d at 128 (holding that prosecutor\u2019s comments concerning defendant\u2019s right to the compulsory process of a particular witness who was not called to testify at trial did not warrant reversal for a new trial, where the comments were made in response to the provocation of defense counsel implying that the prosecutors\u2019 case would have been compromised had the State called that person as a witness).\nDefendant also complains of the following comment made by the prosecutor in his rebuttal argument: \u201cWhatever method he concocted to obliterate her body, he certainly had no taboos about that. No body in this case? Blame him. He\u2019s the one who decides the scene of the crime, the time of death, the place of death, the disposal of the body.\u201d Defendant contends that with these comments, the prosecutor again shifted the burden onto defendant by essentially inviting the jury to use the fact that Marcy\u2019s body was never found against him. We disagree. The core of the State\u2019s remarks was predicated on evidence presented at trial, namely, defendant\u2019s own statement to Sexton that because the police could not find Marcy\u2019s body, \u201cthey knew he [the defendant] had done it,\u201d and that defendant was not worried because \u201cthey\u2019ll never find a piece of the bitch.\u201d Viewing defendant\u2019s statements in context, the prosecutor could reasonably infer that defendant admitted that he destroyed or, in the very least, was responsible for the disappearance of Marcy\u2019s body. As such, we find the prosecutor\u2019s remarks proper. See Wilburn, 263 Ill. App. 3d at 181, 635 N.E.2d at 886 (a prosecutor may properly make comments that are based on the evidence or reasonable inferences therefrom; reasonable inferences deducible from the evidence may be drawn even if they are unfavorable to defendant).\nDefendant next complains of the following comment made by the prosecutor as error: \u201cWho else could have done it? No one, just him.\u201d Defendant now contends that with this argument, the prosecutor invited the jury to convict defendant for his failure to prove that someone else was guilty of the crime. We disagree.\nWe first note that defendant takes the aforementioned comment completely out of context. When read in its entirety, it becomes clear that the comment was a proper conclusion drawn by the prosecutor from the evidence presented at trial. The comment read in its entirety is as follows:\n\u201cYou can\u2019t just look at bits and pieces here and there and knock each thing down. You have to look at everything, how it all fits together. And when you combine it all, ladies and gentlemen, there is absolutely no doubt, no doubt whatsoever in this case that [defendant] killed her. Who else could have done it? No one, just him. That\u2019s why he didn\u2019t let them come up in the apartment, and that\u2019s why he carried her out wrapped in the carpet.\u201d\nIn light of the fact that defendant was the last person to have been seen with Marcy when she was alive, injured, and drugged, and that defendant refused to let Dori and Gay come inside his apartment despite their continued efforts to do so upon hearing Marcy\u2019s plea to \u201cget her out\u201d of defendant\u2019s apartment, the prosecutor properly commented on the fact that defendant was the person with the best opportunity to kill her. See Wilburn, 263 Ill. App. 3d at 181, 635 N.E.2d at 886.\nDefendant further contends that the prosecutor improperly allied himself with the jury and suggested that defense counsel was biased, when he argued that it was improper for defense counsel to interject his personal opinions into the case and when he argued:\n\u201cYou know what? The State is just people. It\u2019s people like you. It\u2019s people like me. It\u2019s people like the judge, his Honorable Judge Rickey Jones. It\u2019s people like the court clerk. And yes, it\u2019s also police officers and U.S. marshals. And it\u2019s mostly good people, people trying to do their jobs like those coroners.\u201d\nFor the reasons that follow, we disagree.\nWe acknowledge that it is error for the prosecution to \u201calign itself with the jury\u201d as a \u201cthirteenth juror,\u201d because this implies that the State is partial. See People v. Flax, 255 Ill. App. 3d 103, 110, 627 N.E.2d 359, 365 (1993); People v. Vasquez, 8 Ill. App. 3d 679, 681, 291 N.E.2d 5, 7 (1972); People v. Johnson, 149 Ill. App. 3d 465, 468, 500 N.E.2d 728, 731 (1986). However, we find that this is not what the prosecutor did in the present case.\nFirst, defendant takes the prosecutor\u2019s comment out of context. When read in its entirety, it becomes clear that the prosecutor made the complained-of remark in his rebuttal argument only in response to defense counsel\u2019s statements in both opening and closing arguments that the State with all its \u201cawesome power\u201d could not find Marcy\u2019s body. The record reflects that the prosecutor\u2019s comment in its entirety went as follows:\n\u201cAnd there he [defense counsel] went again with the awesome power of the State again in closing argument, the awesome power of the State, the king of England, you know, some thing, some creature with superhuman powers. And if Marcy was alive, then this creature of the State would have found her. And, therefore, she must be alive because this superhuman creature of the State didn\u2019t find her, therefore she\u2019s dead, this awesome power of the State. Stand up and be afraid. Be in awe of the State.\nThat\u2019s not what the State is. You know what? The State is just people. It\u2019s people like you. It\u2019s people like me. It\u2019s people like the judge, his Honorable Judge Rickey Jones. It\u2019s people like the court clerk. And yes, it\u2019s also police officers and U.S. marshals. And it\u2019s mostly good people, people trying to do their jobs like those coroners.\n*** That\u2019s what the State is, and try they did. They tried their best. They tried to find her body, and they didn\u2019t because they\u2019re not superhuman.\u201d\nAlthough the State\u2019s reference to \u201cpeople like you\u201d would best have been avoided, when read in context, that comment does not appear to be designed to portray the State as being a \u201c13th juror,\u201d or to \u201calign the State with the jury,\u201d but rather to dilute the impact of defense counsel\u2019s comments regarding the power and omniscience of the State. As such, this comment was not made in error. See People v. Pineda, 349 Ill. App. 3d 815, 823-24, 812 N.E.2d 627, 635-36 (2004) (holding that prosecutor\u2019s comments during closing argument that \u201csociety\u201d had an interest in convicting defendant, and that it would not tolerate senseless violence, did not constitute an improper attempt to align the jury and society with the prosecution; rather, when read in context, prosecutor\u2019s argument merely emphasized that the State, rather than the victims, had initiated the prosecution); Enoch, 189 Ill. App. 3d at 552, 545 N.E.2d at 441-42 (holding that prosecutor\u2019s comments during closing argument referring to \u201c \u2018each and every one of us, and all our loved ones,\u2019 \u201d did not constitute an improper alignment of the prosecution with the jury or the prosecutor acting as a \u201c \u2018thirteenth juror\u2019 \u201d).\nMoreover, even if the prosecutor\u2019s remarks were wholly uncondonable, the error incurred would nevertheless have been harmless, when considered in light of the overwhelming evidence of defendant\u2019s guilt, discussed in detail above. See Hudson, 157 Ill. 2d at 441, 626 N.E.2d at 178; Mahaffey, 128 Ill. 2d at 425, 539 N.E.2d at 1190; see also Wilburn, 263 Ill. App. 3d at 182, 635 N.E.2d at 886-87; see also Flax, 255 Ill. App. 3d at 110, 627 N.E.2d at 365 (holding that in light of the overwhelming evidence of defendant\u2019s guilt presented at trial, any error arising from the prosecutor\u2019s remarks in closing argument referring to the prosecutor\u2019s \u201cassociation\u201d with \u201cgood men and women jurors\u201d in murder prosecution and reference to defendant as a \u201cbad man,\u201d was harmless, despite defendant\u2019s contention that remarks were impermissible attempt to align prosecutor with jurors in same \u201cassociation\u201d).\nSimilarly, we reject defendant\u2019s contention that it was error for the prosecutor to argue that defense counsel had inappropriately interjected his personal opinions into the case. The record reveals that in fact it was defense counsel who improperly interjected personal opinions into his closing argument, when he stated that he was \u201cshocked\u201d when he read the transcript and Panisi\u2019s arrest report and discovered that Panisi had been under arrest when he claimed to be at defendant\u2019s apartment and when he argued that that situation \u201camazes me.\u201d On both occasions, the circuit court sustained the State\u2019s prompt objection to defense counsel\u2019s use of personal opinion, but counsel continued to argue in that vein. As a result, in response to defense counsel\u2019s improper argument, in rebuttal the prosecutor made the following comment:\n\u201cYou know, lawyers are not supposed to inject their opinion because if their opinion is something that you should consider, then you should fairly consider their bias as well and where their motivations to lie ***. When [defense counsel] says I was shocked, consider that he had an obligation to zealously represent just one client, this man here. So, you have to consider the bias, and that\u2019s why lawyers\u2019 opinion like that should never be injected into the case.\u201d\nWe find that this comment was not made in error but rather in direct and proper response to defense counsel\u2019s improper statements. See Wilburn, 263 Ill. App. 3d at 182, 635 N.E.2d at 886-87 (\u201c[i]t is axiomatic that a prosecutor may properly respond to comments made by defense counsel which clearly invite response\u201d); Hunter, 331 Ill. App. 3d at 1030, 772 N.E.2d at 390 (holding that a prosecutor\u2019s remarks are generally deemed proper if they have been invited or provoked by defendant); see also Enoch, 189 Ill. App. 3d at 548, 545 N.E.2d at 438-39 (\u201c[a] defendant should not be allowed to benefit from his own counsel\u2019s misconduct which invited the State\u2019s response\u201d), Starks, 169 Ill. App. 3d at 600, 523 N.E.2d at 991.\nBecause we find no error in any of the aforementioned prosecutorial remarks, we cannot find plain error and therefore conclude that the issue has been waived by defendant. People v. Precup, 73 Ill. 2d 7, 17, 382 N.E.2d 227, 231 (1978) (\u201cBefore plain error can be considered as a means of circumventing the general waiver rule, it must be *** apparent from the record that an error *** was committed\u201d).\nD. State\u2019s Reliance on Perjured Testimony\nDefendant finally contends that he was denied his right to due process and a fair trial when the State relied on perjured testimony to convict him and that, consequently, the trial court erred in denying his section 116 \u2014 1 posttrial motion (see 725 ILCS 5/116 \u2014 1 (West 2000)) on these grounds. Specifically, defendant asserts that the State\u2019s key witness, Panisi, falsely testified at trial that he served \u201cthree tours in Vietnam,\u201d and that he was a \u201cberet,\u201d and that the State relied on this evidence in closing argument to bolster his credibility. Defendant asserts that considering the fact that Panisi was the only witness at trial to aver that he saw Marcy\u2019s body in defendant\u2019s apartment, his credibility was a material issue in the trial. The State concedes that Panisi committed perjury, but contends that defendant was not denied his right to due process because the prosecutor had no knowledge of the perjury at trial. For the reasons that follow, we agree.\nIt is well established that the State\u2019s knowing use of perjured testimony to obtain a criminal conviction violates a defendant\u2019s right to due process of law. People v. Bowman, 357 Ill. App. 3d 290, 303, 827 N.E.2d 1062, 1075 (2005), citing People v. Olinger, 176 Ill. 2d 326, 345, 680 N.E.2d 321, 331 (1997). \u201cA conviction obtained by the knowing use of false testimony [will] be set aside if there is a reasonable likelihood that the false testimony could have affected the verdict.\u201d People v. Thurman, 337 Ill. App. 3d 1029, 1032, 787 N.E.2d 263, 266 (2003). These same principles are also applicable when the State, although not soliciting false testimony, fails to correct it when it occurs. Thurman, 337 Ill. App. 3d at 1032, 787 N.E.2d at 266.\nDefendant is correct when he asserts that it is equally well established that the aforementioned principles apply even where the witness\u2019s false testimony goes only to that witness\u2019s credibility. Napue v. Illinois, 360 U.S. 264, 269, 3 L. Ed. 2d 1217, 1221, 79 S. Ct. 1173, 1177 (1959). This is because \u201c[the] jury\u2019s estimate of the truthfulness and reliability of a given witness may well be determinative of guilt or innocence, and it is upon such subtle factors as the possible interest of the witness in testifying falsely that a defendant\u2019s life or liberty may depend.\u201d Napue, 360 U.S. at 269, 3 L. Ed. 2d at 1221, 79 S. Ct. at 1177. However, even under those circumstances, \u201cthe State only has an obligation to correct the testimony of a witness when it has knowledge that the witness is mistaken in his testimony.\u201d Bowman, 357 Ill. App. 3d at 303, 827 N.E.2d at 1075.\nHere there is nothing in the record to indicate that the State knew that Panisi\u2019s statements that he was a \u201cberet\u201d and that he served three tours in Vietnam were false. During the hearing on the motion for new trial, when questioned about the State\u2019s knowledge of the falsity of Panisi\u2019s military record, the prosecutor elaborated:\n\u201cFirst off, the State didn\u2019t do anything different than everyone else in this building does everyday, day in and day out. You call a witness. Before you call a witness, you talk to them, you learn a little about his background. You say, \u2018Where do you work? What do you do? Tell me a little about yourself?\u2019 And then, after the witness states his name for the record, you have him talk a little about who he is, what he does. The jury likes to hear a little bit about the person. Everybody does that. And that day after jury selection, when he said that \u2014 And he\u2019s the one who volunteered it, you know when he talked about how he walked into the apartment, and he saw Marcy chained to the radiator, he blurted out that \u2018I\u2019ve never seen anything like that, not even in Nam.\u2019 \u2018You were in Vietnam?\u2019 \u2018Yes, I was. Three tours.\u2019 Just took him at his word. Didn\u2019t think much of it. Didn\u2019t think it was really important at all. It\u2019s just part of the background of every civilian witness that we call or police witness day in and day out.\u201d (Emphasis added.)\nUnder the foregoing, there is no basis upon which to presume that the State knew of or condoned Panisi\u2019s perjury. Accordingly, the State cannot be charged with the obligation to correct the false testimony of a witness when it does not know that the witness\u2019s testimony is false. See Bowman, 357 Ill. App. 3d at 303, 827 N.E.2d at 1075.\nDefendant nevertheless cites to People v. Cornille, 95 Ill. 2d 497, 448 N.E.2d 857 (1983), and the cases cited therein, for the proposition that defendant need not establish that the State \u201cknew\u201d its witness testified falsely in order to reverse defendant\u2019s conviction. In Cornille, defendant was convicted of arson, primarily on the testimony of the State\u2019s witness that, based on the evidence at the scene of the crime, he came to the conclusion that defendant had started the fire in his own apartment with the use of gasoline. Cornille, 95 Ill. 2d at 500, 448 N.E.2d at 859. Nearly two years after defendant\u2019s trial, a reporter employed by a Chicago daily newspaper interviewed the state\u2019s expert witness, a consultant in fire investigations who had given crucial testimony of the State at trial. Cornille, 95 Ill. 2d at 500, 448 N.E.2d at 859. The expert witness admitted in the interview that he had lied about his credentials as an arson-investigating expert when testifying at defendant\u2019s trial as well as at other arson trials. Cornille, 95 Ill. 2d at 500, 448 N.E.2d at 859. After publication of the story and based upon this interview, defendant filed a postconviction petition based upon the witness\u2019s false testimony at his trial. Cornille, 95 Ill. 2d at 500, 448 N.E.2d at 859. Our supreme court held that under the \u201cunique\u201d circumstances of that case, defendant was entitled to a new trial. Cornille, 95 Ill. 2d at 515, 448 N.E.2d at 866.\nIn doing so, our supreme court noted the long-established rule, endorsed by our federal courts, that \u201cit is only the knowing use of false testimony by the prosecution or other agents of the State which violates due process.\u201d (Emphasis added.) Cornille, 95 Ill. 2d at 509-10, 448 N.E.2d at 863, citing United States ex rel. Burnett v. People of the State of Illinois, 619 F.2d 668 (7th Cir. 1980), cert. denied, 449 U.S. 880, 66 L. Ed. 2d 104, 101 S. Ct. 229 (1980). The court, however, also noted defendant\u2019s citation to the appellate decision in People v. Shannon, 28 Ill. App. 3d 873, 329 N.E.2d 399 (1975), which held that it was not necessary that the defendant show the State had knowledge of the perjured testimony, explaining:\n\u201c \u2018[T]he use of the State\u2019s judicial process to enforce a right of the People, the violation of which is based upon the peijured testimony of a private individual, constitutes State action whether or not the State knew that the testimony was perjured. Known to the State or not, the use of its judicial process to convict and imprison on perjured testimony is a miscarriage of justice which is abhorrent to fundamental fairness and as such is intolerable.\u2019 \u201d Cornille, 95 Ill. 2d at 510, 448 N.E.2d at 864, quoting Shannon, 28 Ill. App. 3d at 878, 329 N.E.2d at 404.\nAlthough the supreme court refused defendant\u2019s invitation to adopt the approach of the appellate court in Shannon, and applied the more restrictive approach of the federal courts (Cornille, 95 Ill. 2d at 511, 448 N.E.2d at 864), it nevertheless acknowledged the existence of a \u201cdue diligence\u201d standard for the use of perjured testimony by the State, by holding that \u201cunder certain circumstances the prosecutor should not be permitted to avoid responsibility for the false testimony of a government witness by failing to examine readily available information that would establish that the witness is lying.\u201d Cornille, 95 Ill. 2d at 513, 448 N.E.2d at 865.\nThe court then found that in that case the State\u2019s \u201clack of diligence\u201d was evinced by the fact that the same expert witness had testified on behalf of the State in at least two other criminal trials, and that considering that at defendant\u2019s trial he alleged that he had \u201cinvestigated over 1,300 fires in his 14-year-career as a \u2018fire investigator,\u2019 \u201d there was a clear danger that he could have testified in many more. Cornille, 95 Ill. 2d at 513, 448 N.E.2d at 865. The court further found that the expert was \u201cnot merely an occurrence witness whose presence at the trial was determined by his relationship to the facts of the case.\u201d Cornille, 95 Ill. 2d at 513, 448 N.E.2d at 865. Instead, the court held:\n\u201cThe State selected him to offer the jury his expert opinion on the causes of the fire and relied upon the credibility imparted by his expertise to win an otherwise closely balanced case. As the prosecution made the mistake of producing an expert witness who was an imposter, it is only fair to charge it with responsibility for the imposter\u2019s false testimony.\u201d Cornille, 95 Ill. 2d at 513, 448 N.E.2d at 865.\nA careful analysis of the decision in Cornille would focus the application of the \u201cdue diligence\u201d standard in place of the \u201cknowing use\u201d standard to situations where witnesses are deliberately selected by the State and where the State has latitude to procure the necessary testimony from sources of its own choosing. A typical situation would involve the testimony of an expert witness. There, the State may be charged with responsibility to do a sufficient background check so as to justify the witness\u2019s qualifications to testify in the area of his professional expertise. This requirement, however, is not readily transferable to occurrence witnesses, where you take the witness as you find him. See Bowman, 357 Ill. App. 3d at 303, 827 N.E.2d at 1075, citing Olinger, 176 Ill. 2d at 345, 680 N.E.2d at 331; see also People v. Jimerson, 166 Ill. 2d 211, 228, 652 N.E.2d 278, 286 (1995); Thurman, 337 Ill. App. 3d at 1032, 787 N.E.2d at 266; United States v. Bagley, 473 U.S. 667, 678-80, 87 L. Ed. 2d 481, 492, 105 S. Ct. 3375, 3381-82 (1985). However, even if \u201cdue diligence\u201d were a prerequisite to the testimony of any witness, there is no indication here that the duty was violated, as the witness came into the State\u2019s purview only after the jury was selected and before there was sufficient opportunity prior to his testimony to investigate and explore his self-aggrandizing statement.\nMoreover, even if the State were accountable for the use of perjured testimony where this use was not made knowingly, nor injected into the trial by reason of the State\u2019s lack of \u201cdue diligence,\u201d the use of that testimony would nevertheless have constituted harmless error in light of the overwhelming evidence of defendant\u2019s guilt. See Jimerson, 166 Ill. 2d at 228, 652 N.E.2d at 286 (holding that harmless error analysis applies to allegations of improper use of peijured testimony); Olinger, 176 Ill. 2d at 345, 680 N.E.2d at 331 (\u201cA conviction obtained by the knowing use of peijured testimony must be set aside if there is any reasonable likelihood that the false testimony could have affected the jury\u2019s verdict. [Citation.] This standard is equivalent to the harmless error standard\u201d).\nThe record reveals that Panisi\u2019s credibility was already thoroughly impeached by defense counsel. The jury was already fully aware of Panisi\u2019s drug use, his mental illness, his prior criminal background, his counting-card scams in Las Vegas, and his homelessness. As such, we find it highly improbable that the jury would have set aside all this evidence simply because Panisi stated that he served in Vietnam 30 years before. Rather, the record reveals that Panisi\u2019s credibility hinged on the fact that his testimony regarding the crime was corroborated in nearly every respect by other witnesses who testified at trial, namely, Sexton, Dori, Gay and Harold. The only additional and different piece of evidence offered by Panisi was his testimony that he observed Marcy\u2019s body in the rug in defendant\u2019s apartment on February 18, 1984. However, this evidence was already challenged by defendant\u2019s witness, Officer Moreno, who testified that in the early afternoon of February 18, 1984, he arrested Panisi for a car stereo theft, thereby raising questions as to whether Panisi could in fact have seen the body wrapped in a rug at defendant\u2019s apartment if he had in fact been in police custody on that day. As such, we find that there is no reasonable likelihood that the additional evidence would have had any bearing on the jury\u2019s determination of Panisi\u2019s overall credibility.\nMore overridingly, we hold that even without Panisi\u2019s entire testimony, the jury was presented with overwhelming evidence of defendant\u2019s guilt. As stated above, other than seeing a body in a rug and seeing defendant take that body to his car, everything else Panisi said was testified to by other witnesses at trial. Testimony by Dori, Gay and Harold established that Marcy was last seen alive in defendant\u2019s apartment and that at this time she was injured so as not to be able to walk, and she was drugged and stumbling naked around the place. Dori\u2019s and Gay\u2019s testimony further established that Marcy was being confined in defendant\u2019s apartment against her will, that defendant was \u201cscaring her,\u201d and that she had asked her friends to \u201cget her out of there.\u201d Moreover, both girls testified that when they attempted to go into defendant\u2019s apartment to get Marcy, defendant met them in front of his house so as to prevent them from going up the stairs and into his second-floor apartment, screaming at them, and threatening that he would kill them and throw battery acid in their faces. Similarly, Marcy\u2019s mother, Sara, testified to the exhaustive and fruitless efforts she undertook to locate her daughter after Dori had told her what had happened with defendant. Sara also averred that Marcy was the type of girl who always remained in contact with family and friends and that it was entirely out of character for Marcy to disappear and never contact anyone again. In addition, the testimony of Dori and Gay provided a motive for the crime, namely, that defendant expressed great anger after the accident, threatening and blaming the girls for the car accident in which his mother\u2019s car was destroyed.\nAll of this testimony tended to prove that Marcy did not just disappear but rather that she was killed, and it sufficiently corroborated the incriminating statements defendant made to Sexton, so as to permit the use of those statements in establishing defendant\u2019s guilt. Defendant told Sexton that he tricked Marcy into taking a large dose of the potent and possibly deadly THC, and that after the girl took the drugs, she became incoherent and started stumbling around the apartment and that he had to handcuff her to the radiator. This statement was corroborated by Harold, who saw Marcy drugged and naked in defendant\u2019s apartment close to Valentine\u2019s Day 1984. The statement was further corroborated by the testimony of defendant\u2019s ex-wife, who averred that prior to Valentine\u2019s Day 1984, defendant owned a pair of handcuffs, but that after this date, she never saw the handcuffs again. Defendant also showed Sexton that he killed the girl by strangling her and indicated that he did so because he had to \u201cmake sure\u201d she was dead, as \u201che couldn\u2019t take another hit like that.\u201d Defendant then bragged to Sexton that he was not worried about being caught \u201cbecause they\u2019ll never find a piece of the bitch.\u201d In light of all of the aforementioned evidence, we find that there was sufficient evidence to convict defendant even without Panisi\u2019s testimony and that, therefore, any error in the State\u2019s use of the perjured testimony would necessarily have been harmless.\nDefendant alternatively contends that notwithstanding whether there was error by the trial court in denying his posttrial motion, regarding the use of perjured testimony, he was entitled to collaterally attack that judgment under section 2 \u2014 1401 with newly discovered evidence of Panisi\u2019s military records. For the reasons that follow, we disagree.\nA petition for relief from final judgment is the forum in a criminal case in which to correct all errors of fact occurring in the prosecution of a case, unknown to petitioner and the court at the time of the trial, which, if then known, would have prevented the judgment. People v. Gandy, 227 Ill. App. 3d 112, 139, 591 N.E.2d 45, 64 (1992); see also People v. Diehl, 335 Ill. App. 3d 693, 708, 783 N.E.2d 640, 654 (2002), citing People v. Mahaffey, 194 Ill. 2d 154, 181, 742 N.E.2d 251 (2000) (\u201c[t]he purpose of a section 2 \u2014 1401 petition is to present errors of fact, unknown to the petitioner or the court at the time of trial, that would have caused the court to render a different decision\u201d). Setting aside a judgment on the basis of newly discovered evidence is justified where the petitioner shows both that the new evidence was unknown to him at the time of trial and that he could not have discovered the new evidence with the exercise of reasonable diligence. People v. Waters, 328 Ill. App. 3d 117, 127, 764 N.E.2d 1194, 1202 (2002). In addition, the new evidence must be so conclusive that it would probably change the result on retrial, must be material, and must be more than merely cumulative to the trial evidence. Waters, 328 Ill. App. 3d at 127, 764 N.E.2d at 1202. A section 2 \u2014 1401 petition must be supported by \u201caffidavit or other appropriate showing as to matters not of record.\u201d 735 ILCS 5/2 \u2014 1401(b) (West 2000). We will not disturb a trial court\u2019s decision to grant or deny relief pursuant to section 2 \u2014 1401 absent an abuse of discretion. People v. Haynes, 192 Ill. 2d 437, 461, 737 N.E.2d 169, 182-83 (2000).\nIn the present case, contrary to defendant\u2019s contention, we find that the evidence is not so conclusive that it would probably change the result on retrial. Waters, 328 Ill. App. 3d at 127, 764 N.E.2d at 1202. We acknowledge that evidence going to the credibility of a key witness may be material in a criminal case, especially if the credibility of the witness is paramount in the decision of the trier of fact. See, e.g., Napue, 360 U.S. at 269, 3 L. Ed. 2d at 1221, 79 S. Ct. at 1177; see also Cartwright v. Goodyear Tire & Rubber Co., 279 Ill. App. 3d 874, 884, 665 N.E.2d 365, 372-73 (1996). However, here, as already discussed above in our harmless error analysis, in light of the overwhelming evidence presented against defendant at trial, we nevertheless find that the presentation of impeaching testimony establishing that Panisi lied about his military record is \u201cnot so conclusive\u201d as to defendant\u2019s innocence that it would be likely to change the outcome on retrial. As such, we hold that the trial court did not abuse its discretion in dismissing defendant\u2019s section 2 \u2014 1401 petition. Haynes, 192 Ill. 2d at 461, 737 N.E.2d at 182-83.\nIII. CONCLUSION\nFor the foregoing reasons, we affirm the judgment of the circuit court.\nAffirmed.\nMcBRIDE, PJ., and O\u2019MALLEY, J., concur.\nDori Pernell is also known was Dori Garrity.\nDefense counsel objected arguing that the statements were impermissible bolstering of Panisi\u2019s testimony through prior consistent statements; the court overruled the objection following a sidebar, finding that the testimony was admissible to rebut an implication of recent fabrication.\nGay Dell testified that at the time of trial her name was Gay Lan.\nAt this time, defendant was serving time for a different crime.\nMoreno was called by defense counsel to confirm that he had arrested Panisi on February 18, 1984, and that at the relevant time Panisi was in jail. As noted above, on cross-examination, Panisi testified that he saw Marcy\u2019s body in a rug in defendant\u2019s apartment on February 18, 1984.\nBecause we find that at trial the State met its burden of establishing corpus delicti, we need not consider the State\u2019s invitation to dispense with the corpus delicti rule in its entirety which under the doctrine of stare decisis would be for our supreme court to determine. See People v. Furby, 138 Ill. 2d 434, 563 N.E.2d 421 (1990); see also People v. Wright, 286 Ill. App. 3d 456, 461 (1996).\nThe record reveals that this document would have included, inter alia, the 1985 grand jury testimony of Michael Panisi.",
        "type": "majority",
        "author": "JUSTICE JOSEPH GORDON"
      }
    ],
    "attorneys": [
      "Michael J. Pelletier and Brian A. McNeil, both of State Appellate Defender\u2019s Office, of Chicago, for appellant.",
      "Richard A. Devine, State\u2019s Attorney, of Chicago (James E. Fitzgerald and Peter Fischer, Assistant State\u2019s Attorneys, of counsel), for the People."
    ],
    "corrections": "",
    "head_matter": "THE PEOPLE OF THE STATE OF ILLINOIS, Plaintiff-Appellee, v. CASEY NOWICKI, Defendant-Appellant.\nFirst District (6th Division)\nNo. 1\u201405\u20143645\nOpinion filed August 29, 2008.\nMichael J. Pelletier and Brian A. McNeil, both of State Appellate Defender\u2019s Office, of Chicago, for appellant.\nRichard A. Devine, State\u2019s Attorney, of Chicago (James E. Fitzgerald and Peter Fischer, Assistant State\u2019s Attorneys, of counsel), for the People."
  },
  "file_name": "0053-01",
  "first_page_order": 69,
  "last_page_order": 118
}
