Bryan Kohberger's former forensic expert is calling for the defense lawyers who brokered his guilty plea to answer questions under oath, a move that could force a reckoning over whether critical evidence was buried before the convicted killer admitted to four murders.
Brent Turvey, a forensic scientist who examined crime-scene evidence on behalf of Kohberger's defense team, says the court needs to investigate the convicted murderer's claims that his attorneys coerced him into pleading guilty and failed to tell him about potentially exculpatory hair evidence recovered at the scene of the November 2022 killings in Moscow, Idaho. Turvey, senior partner at Forensic Solutions LLC and a veteran of more than 70 trial testimonies, traveled to Moscow to review the state's physical evidence in person the December before Kohberger's sentencing. What he found, he says, should have changed the trajectory of the case.
Kohberger pleaded guilty in July 2025 to murdering University of Idaho students Ethan Chapin, Xana Kernodle, Madison Mogen, and Kaylee Goncalves. A judge at the Ada County Courthouse in Boise sentenced him to four consecutive life terms without the possibility of parole, plus an additional ten years for burglary. Now, roughly a year later, Kohberger has filed a petition for post-conviction relief, a legal mechanism that allows a convicted person to challenge a guilty plea on constitutional grounds, seeking to withdraw that plea entirely.
The hair evidence sits at the center of the dispute. Turvey says he observed more than two dozen visible hair strands, a mix of light and dark brown, roughly three to four inches long, on the frame of Xana Kernodle's bed, affixed by dried blood beneath the spot where Ethan Chapin's right hand was photographed at the crime scene. The evidence was still present on the bed frame when Turvey examined it months after the murders.
The hairs were first described publicly in a book called "Broken Plea" by Christopher Whitcomb. Kohberger later referenced the book in an interview with the New York Times. Fox News Digital reported that the FBI lab excluded Kohberger as the source of the hair based on physical examination, not DNA testing.
Turvey was blunt about what that means.
"The FBI lab said Kohberger is excluded. This is not his hair."
The fact that the hairs were excluded by physical examination alone, and apparently never subjected to DNA analysis, raises an obvious question the court has not yet addressed: whose hair was it? And why wasn't the testing completed?
Evidence integrity in criminal cases has drawn intense public scrutiny in recent years. A Kentucky man recently won a $24 million verdict after spending more than two decades in prison for a murder he says investigators wrongly pinned on him, a case that turned on questions about how physical evidence was handled and presented.
Turvey is not simply raising questions about the hair. He wants Kohberger's former lead defense attorney, Anne Taylor, and her co-counsel to face direct questioning under oath about what they knew, when they knew it, and why they handled the case the way they did.
"Everybody involved needs to be put under oath, starting with Anne Taylor and her legal team."
The relationship between Turvey and the defense team has fractured publicly. Taylor and two co-counsel previously accused Turvey of violating a confidentiality agreement and said they were "appalled" by his public comments about the case. Turvey, for his part, has pushed back hard.
"This will require Anne Taylor and her co-counsel to answer some very difficult questions. Not just why she attacked her own experts for revealing the possibility of the exculpatory material, but for failing to respond to another expert that is out there claiming he's guilty and that he knew it from the start."
Taylor did not respond to a request for comment. The FBI also declined to comment.
Kohberger's handwritten petition, filed from Idaho Maximum Security Penitentiary, makes two core claims: that his attorneys coerced him into accepting the plea agreement, and that they failed to disclose or adequately review potentially exculpatory evidence, specifically the hair found in Chapin's hand area. He alleges his lawyers told him his plea "need not be truthful, despite petitioner's vehement denial of actual guilt," AP News reported.
That claim collides directly with the courtroom record. During his plea hearing, Judge Hippler asked Kohberger point-blank: "Are you pleading guilty because you are guilty?" Kohberger answered, "Yes." He is now contradicting that statement entirely.
In his petition, Kohberger declared his position in stark terms. Newsmax reported that Kohberger wrote: "My actual innocence is my truth, and the plea, hinged on by false promises and blatant disinformation, MUST be withdrawn."
Kohberger prepared the filing himself and plans to seek court-appointed counsel to pursue the effort. He waived his right to appeal as part of the original plea deal but is pursuing post-conviction relief, a separate legal track that remains available even after an appeal waiver. Under Idaho court rules and U.S. Supreme Court precedent established in the 1985 case Hill vs. Lockhart, guilty pleas can be overturned if a defendant proves the plea resulted from constitutionally deficient legal advice. The New York Post reported that Kohberger has asserted an "absolute claim of innocence."
Questions about evidence handling and admissibility have shaped other major criminal proceedings this year, including the Luigi Mangione murder trial, where a judge allowed the suspected murder weapon into evidence but excluded other items from the defendant's backpack.
Not everyone finds Kohberger's claims persuasive. Shanon Gray, the attorney representing the family of victim Kaylee Goncalves, pushed back sharply on the idea that the hair evidence changes anything.
"If he's talking about the hairs, that's not exculpatory evidence."
Gray pointed out that the defense team already had the evidence in its possession before the plea was entered.
"The defense had that evidence. And someone was gonna testify about it."
Gray also identified what he called the central flaw in Kohberger's argument: even if the hair belonged to someone else, that fact alone does not prove Kohberger was not present at the crime scene.
"The other glaring issue is that all that proves is that there could've been another person, not that he wasn't present."
That distinction matters legally. A hair from an unknown person on a bed frame in a shared student house does not, on its own, exclude the person who admitted to committing the murders. It raises a question, but a question is not an exoneration.
Kaylee Goncalves' mother expressed disappointment at Kohberger's latest legal maneuver but said she was not surprised by it. The families of the four victims, all University of Idaho students who were stabbed to death in November 2022, have endured years of legal proceedings since the killings. Goncalves' final Instagram post, shared the day before the murders, showed Mogen on the shoulders of her best friend Goncalves, posing alongside Chapin, Kernodle, and two other housemates.
Turvey, despite the public rift with the defense team that once retained him, argues the court has an obligation to take Kohberger's allegations seriously, not because Kohberger deserves sympathy, but because the legal system demands it.
"The court should want to know what evidence Bryan Kohberger has regarding these clear accusations of coercion and ineffective assistance."
The Washington Examiner reported that Kohberger said in his petition: "A lot went wrong in those plea discussions. I really do want to be heard." He has until early September to formally file for post-conviction relief. If a court grants his petition, the former criminology student would face a full trial, and, critically, would once again be exposed to the death penalty he avoided by pleading guilty.
Kohberger has never responded to any letters or emails from Fox News Digital. When asked about the prosecutors' evidence against him, he declined to address it, saying he wanted those questions "investigated and answered appropriately in a trial setting," Breitbart reported.
The pattern is familiar in high-profile criminal cases: allegations of suppressed or mishandled evidence surface after a conviction, and the legal system is forced to decide whether the original proceedings were fundamentally fair. Similar questions about evidence handling at the federal level have fueled bipartisan concern about accountability in the justice system.
Kohberger stood in open court, looked a judge in the eye, and said he was guilty. If he now wants the world to believe he lied under oath at his own attorneys' instruction, the least the system owes the four victims and their families is a full accounting, under oath, from every lawyer who touched the case.