Louisiana Supreme Court Frees Death Row Inmate After 27 Years, Citing 'Scientifically Indefensible' Evidence

After spending 27 years on death row for a crime that forensic experts now say never happened, Jimmie "Chris" Duncan is officially a free man. In a unanimous decision, the Louisiana Supreme Court affirmed a lower court's ruling to vacate Duncan's 1998 capital murder conviction, bringing an end to a nearly three-decade legal nightmare.[1][2]

The high court's 33-page ruling, authored by Justice Cade Cole, delivered a scathing indictment of the forensic methods used by the state to secure Duncan's original conviction. The justices concluded that the evidence presented at trial was "scientifically indefensible" and that no rational juror would reach a guilty verdict today.[2][5]

Duncan was sentenced to death for the 1993 death of his girlfriend's 23-month-old daughter, Haley Oliveaux. From the beginning, Duncan maintained his innocence, telling investigators that he had left the toddler in a bathtub while he washed dishes, only to return and find her floating face down.[4][5]

Instead of treating the death as a tragic accident, Ouachita Parish prosecutors pursued first-degree murder charges. To build their case, they relied heavily on the testimony of two highly controversial figures: forensic dentist Dr. Michael West and pathologist Dr. Steven Hayne.[1][5]

The prosecution's theory hinged on "bite mark analysis," a forensic technique that attempts to match dental impressions to marks left on a victim's skin. Dr. West testified that marks found on the toddler's body definitively matched Duncan's teeth, providing the core physical evidence linking him to an intentional homicide.[1][2]

However, post-conviction investigations revealed shocking misconduct. During the appeals process, evidence emerged showing Dr. West captured on video physically pushing a dental mold of Duncan's teeth into the deceased child's skin. Experts cited in the Supreme Court order noted that this method effectively created the very marks West claimed to be analyzing, destroying the original evidence in the process.[2]

Bite mark analysis, once a staple of courtroom prosecutions in the 1980s and 1990s, has since been widely discredited by the broader scientific community. The National Academy of Sciences and numerous forensic boards now classify the practice as highly subjective "junk science" lacking empirical validation.[1][3]

The turning point in Duncan's legal battle arrived during a 2024 evidentiary hearing. New expert testimony demonstrated that the physical evidence was entirely consistent with accidental drowning, corroborating the account Duncan had given police decades earlier.[5]

Furthermore, the post-conviction review uncovered evidence that the child had suffered previous head injuries prior to the incident in the bathtub. Medical experts testified that these pre-existing injuries could easily explain the drowning, systematically dismantling the state's theory of a violent murder.[5]

Duncan's pathway to exoneration was facilitated by a 2021 Louisiana post-conviction law. The legislation was specifically designed to provide prisoners who uncover fresh, reliable evidence of their innocence a more accessible route to challenge unjust sentences.[2]

Utilizing this law, Duncan's legal team, which included attorneys from the Innocence Project, presented their findings to District Court Judge Alvin Sharp in north Louisiana. In May 2025, Judge Sharp vacated the conviction, citing a lack of sufficient grounds for prosecution, and Duncan was released on bail later that year.[2][4]

The Ouachita Parish District Attorney's Office appealed Judge Sharp's decision, asking the state Supreme Court to reinstate the capital sentence and arguing that Duncan remained a safety risk. The high court's unanimous rejection of that appeal serves as a definitive rebuke of the state's reliance on flawed forensics.[2][5]

Justice Cole wrote that the new evidence "did not simply offer a competing interpretation of the trial evidence, but instead substantially undermined the core forensic and medical evidence on which the state's theory of first-degree murder depended."[5]

The fallout from the ruling extends far beyond a single case. Duncan is now the tenth death row prisoner to be freed largely due to the discredited testimony of Dr. West and Dr. Hayne, highlighting a systemic failure in the region's criminal justice system during that era.[2][5]

Despite the Supreme Court's emphatic ruling, the legal saga may not be entirely over. Ouachita Parish District Attorney Robert Tew has previously vowed to bring charges against Duncan again and pursue a retrial.[4]

The Innocence Project has stated they will continue to fight any retrial efforts until Duncan is "fully and completely exonerated." Legal observers note that securing a new conviction without the discredited bite mark evidence would be an extraordinarily difficult task for prosecutors.[4][6]

The exoneration arrives at a contentious moment in Louisiana politics. State lawmakers have recently debated bills aimed at restricting the post-conviction relief process, proposing strict one-year time limits for prisoners to file petitions after their sentences become final.[3]

Advocates for the wrongfully convicted argue that Duncan's case proves why robust, open-ended appeals processes are necessary. Uncovering forensic fraud and securing new expert testimony often takes decades, long past any arbitrary legislative deadlines.[3][4]

For now, Duncan remains free, surrounded by family and supporters—including the victim's mother, who testified at his bail hearing that she believes he is innocent. After 27 years in the Louisiana State Penitentiary, where he worked as a GED tutor for other inmates, his release stands as a monumental, if delayed, victory for scientific integrity in the courtroom.[2][5]