Murder of Laurie Show

Lambert initially began harassing Show in 1991, after learning that Show had briefly dated Yunkin over the summer. Lambert and Yunkin had a previous relationship, but had reportedly not been dating during the time Yunkin was dating Show. Show and Yunkin had gone on a few dates, with Show reporting to her mother that Yunkin had date raped her.[3] Shortly after his final date with Show, Yunkin resumed dating Lambert, who was pregnant with his child. Reported to be "obsessively jealous" of Show, Lambert proceeded to harass Show in various ways, such as appearing at Show's job and verbally assaulting her.[4] Witnesses reported that Lambert had expressed an intent to "scare Laurie, then hurt her, then slit her throat".[5]

On December 20, 1991, Laurie Show was discovered, fatally wounded, in her home by her mother. Police later recorded that Show had received "a five-inch gash to the throat; a stab wound that punctured a lung and another that grazed her spine; several wounds to the head; and a number of defensive wounds".[6] Hazel Show was not at home at the time of the attack, having been duped by the killers into going to the high school to speak to a guidance counselor.[7] Show's mother reported to the police that her daughter had named Lambert as her killer, saying, "Michelle did it".[8]

Police arrested Lambert, Yunkin, and Lambert's friend, Tabitha Buck, at a local bowling alley later that day for the murder of Show.[9] Initial statements from the three claimed that Yunkin had dropped Lambert and Buck off at Show's house, where the two girls murdered Show. Yunkin stated that he had not participated in the murder, and that, while he was aware that Lambert and Buck planned to cut Show's hair with the knife as a prank, he did provide them with an alibi, as well as helping to dispose of evidence.[10] Lambert and Buck would later recant their initial statements, with Lambert claiming that an abusive Yunkin had encouraged her to harass and assault Show.[6]

Lambert, Buck, and Yunkin were each tried for the murder of Laurie Show. Yunkin agreed to testify against Lambert, stating that she and Buck had slit Show's throat after the two had punctured one of Show's lungs.[11] A pair of sweatpants Lambert had worn during the crime were entered into evidence by the prosecution, as Show's blood was present on them.[12] Another exhibit was a letter from Lambert to Yunkin, in which Lambert states, "I know I'm not an angel, but Lawrence, I never got mad enough to kill."[11]

Lambert appealed the 1992 conviction, and in 1997, appeared in court for a federal habeas corpus hearing.[12] U.S. District Judge Stewart Dalzell presided over the trial. Lambert's lawyers claimed there were several inconsistencies with the evidence and testimony given in the earlier trial, and that Lambert was innocent. Lambert claimed she had been framed by Lancaster police officers in order to keep her from coming forward with charges that they had gang-raped her.[17]

Evidence provided at the re-trial included the sweatpants entered into the 1992 proceeding as well as correspondence between Yunkin and Lambert. Dalzell overturned the murder conviction on April 15, 1997, citing that "prosecutorial misconduct" had resulted in an incorrect ruling.[6] Dalzell also barred the state of Pennsylvania from re-trying Lambert.[12] Dalzell's ruling was later overturned in January 1998 by a federal appeals panel that stated that Lambert had "not yet exhausted her appeals in state court" and Lambert was taken back to prison.[18]

After Dalzell's ruling was overturned, the federal court system debated whether to keep Lambert in jail or to uphold Dalzell's verdict.[19] Lambert filed an appeal for a hearing over the second overturning of the verdict, but was denied.[20] In February 1998, the Pennsylvania Supreme Court returned the case to the Lancaster County Court system, stating that Lambert "must first take up her claims [there]".[21] The third trial took place in May 1998, with a federal appeals court temporarily freeing Lambert under the belief that she would win her case.[22] Judge Lawrence F. Stengel oversaw the trial. Various witnesses were called to testify against Lambert, including the detective that had overseen the 1991 murder case as well as Lambert's accomplices, Buck and Yunkin. The detective’s testimony denied allegations that evidence had been tampered with.[23]

Lambert now testified that Yunkin had participated in the murders, choking Show. She also stated that she had attempted to help defend Show against the other two assailants, and that she had tried to pull the victim out of the apartment.[24] Evidence from the 1997 re-trial was presented again. The defense argued that Lambert had not participated in the act, that she had been sent out of the room by Yunkin, and that Lambert had unquestioningly obeyed Yunkin’s orders due to battered woman syndrome.[24] A previous boyfriend of Lambert's confirmed that he had witnessed Yunkin "yank [Lambert] into a room", at which point Yunkin began yelling at her.[25] He also testified that he had seen a police officer, who matched one of the descriptions Lambert gave of her alleged rapists, give her a "threatening glare" at a local festival.[25]

Lambert's lawyers presented correspondence between Lambert and Yunkin that they claimed proved that Lambert had not been involved in the murder and that Yunkin had asked her to lie for him.[26] They also questioned whether or not Show would have been able to speak to her mother before her death, as her throat had been cut, and alleged that Show had actually written out the initials of her murderers, Buck and Yunkin.[26]

Buck denied these claims, testifying that Lambert had actively participated in the murder, and that she had instructed Buck to "wear her hair up and not to wear make-up or fingernail polish".[6][27] Yunkin was later brought to the stand, and the sweatpants that had been alleged to be his in the 1997 trial were produced. Yunkin was ordered to hold the sweatpants up against his body, which were shown to be too short for him, as well as being made of a different fabric from the garment entered into evidence in the 1992 trial.[28] A relative of Yunkin provided a poem written by Lambert in jail that described the murder. Crime scene experts also testified that no evidence of Show writing any initials in her blood was found, and that other evidence discovered at the crime scene did not corroborate Lambert's story.[6]

In August 1998, Judge Stengel announced his verdict, stating he would uphold the original guilty verdict against Lambert, and that "even if he believed [her] story... [she] would still be guilty of first-degree murder as an accomplice".[29] Federal Judge Anita Brody later upheld this verdict. Lambert attempted to appeal the 1998 decision in 2003 and to bring the case to the Supreme Court of the United States, but was rejected both times.[6][30] She exhausted her appeals in 2005.

An hour-long special episode of 20/20 was aired in February 1999, featuring interviews with several former classmates who said that Lambert had made death threats against Show, as well as presenting evidence that one of the officers who allegedly raped Lambert was on a honeymoon during the time the alleged rape occurred.[35] The murder was also featured on a season 8 episode of American Justice, titled "A Teenage Murder Mystery".[36]

In 2000, this murder was adapted into a made-for-TV film entitled The Stalking of Laurie Show. The film was directed by Norma Bailey and starred Jennifer Finnigan as Laurie Show. Critical assessment of the film was poor, with one journalist commenting that the film's depictions of Show and Lambert distorted the true story.[37]

In 2001, writer and journalist Lyn Riddle wrote Overkill, a true-crime book about Show's murder and the resulting trials of Lambert and her accomplices.[38]