Bryan Kohberger's bid to withdraw his guilty plea in the Idaho student murders has triggered a remarkable demand from the forensic scientist who once worked for his own defense, put his former lawyers under oath and make them explain what they knew.
Brent Turvey, a forensic expert who traveled to Moscow, Idaho, to examine crime-scene evidence before Kohberger's sentencing, says hair strands recovered from one victim's bed were never DNA-tested, and that the FBI's own lab excluded Kohberger as their source based on physical examination alone. Now Turvey wants Kohberger's former lead attorney, Anne Taylor, and her co-counsel to answer questions in sworn testimony about why that evidence never reached their client in a way he understood before he agreed to plead guilty.
Kohberger, the former criminology student who admitted to stabbing four University of Idaho students to death in November 2022, pleaded guilty in July 2025 and received four consecutive life sentences without parole plus ten additional years for burglary. The plea spared him from a potential death sentence. He recently filed a handwritten petition for post-conviction relief from Idaho Maximum Security Penitentiary, alleging his attorneys coerced him into the deal and failed to tell him about potentially exculpatory evidence.
The evidence at the center of the dispute is a cluster of hair strands found in the bed of victim Xana Kernodle, affixed to the bed frame by dried blood. Victim Ethan Chapin's right hand was photographed resting near the spot where the hairs were recovered. Turvey, a senior partner at Forensic Solutions LLC who has testified at more than 70 trials, examined the evidence in person during a December trip to Moscow before the July 2025 sentencing.
By his rough estimate, more than two dozen visible hair strands appear in the crime-scene photograph. They range between three and four inches in length and are a mix of light and dark brown. Turvey says the FBI lab's physical examination ruled Kohberger out as the source.
As Fox News Digital reported, Turvey was blunt about what the finding means:
"The FBI lab said Kohberger is excluded. This is not his hair."
The hairs were not DNA-tested. Turvey has not explained publicly why the lab stopped at physical examination, and the FBI declined to comment when Fox News Digital reached out. But the gap between "excluded by physical exam" and "never tested for DNA" is the kind of hole a defense team ordinarily drives a truck through, and Turvey wants to know why Taylor's team did not.
Kohberger's petition rests on two claims: that his attorneys coerced him into the plea, and that they withheld or failed to communicate evidence that could have helped his defense. He has since told the New York Times he maintains "absolute innocence" and described the plea as the product of "false promises and blatant disinformation."
Those assertions collide with what Kohberger said in open court. During his July 2, 2025, plea hearing at Ada County Courthouse in Boise, Judge Hippler asked him directly whether he was pleading guilty because he was in fact guilty. Kohberger replied, "Yes." He also confirmed under questioning that he was acting freely and voluntarily, without coercion.
In his handwritten petition, Kohberger now claims his attorneys told him the plea "need not be truthful, despite petitioner's vehement denial of actual guilt." If that allegation is accurate, it would mean his lawyers coached him to lie under oath, a serious charge against officers of the court. If it is not accurate, Kohberger is the one who lied, either then or now.
Idaho law sets a high bar for withdrawing a guilty plea after sentencing. A defendant must demonstrate "manifest injustice", a standard that goes well beyond buyer's remorse. Supreme Court precedent under Hill v. Lockhart permits reversal if voluntariness or effective counsel is genuinely in question, but courts rarely grant relief when a defendant affirmed guilt on the record.
Turvey's call for sworn testimony did not come out of nowhere. His relationship with Kohberger's former defense team fractured publicly before the sentencing. Taylor and two co-counsel accused Turvey of violating a confidentiality agreement and said they were "appalled" by his public comments about the case. Turvey, for his part, has continued speaking openly, and his criticism has only sharpened since Kohberger filed the petition.
He told Fox News Digital that the court should want to hear what Kohberger has to say about the coercion allegations, and that Taylor's team will face hard questions:
"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 Fox News Digital's request for comment. Kohberger has never responded to any letters or emails from the outlet.
Not everyone sees the hair strands as the bombshell Turvey describes. Shanon Gray, the attorney representing the family of victim Kaylee Goncalves, pushed back sharply on the idea that the evidence is exculpatory at all.
"If he's talking about the hairs, that's not exculpatory evidence. The defense had that evidence. And someone was gonna testify about it."
Gray pointed to a basic logical problem with Kohberger's argument: even if the hairs belong to someone other than Kohberger, that does not prove he was not present at the scene. A shared residence, four students lived in the Moscow house, could easily account for hair from multiple people on a bed frame.
"The other glaring issue is that all that proves is that there could've been another person, not that he wasn't present."
Gray's point cuts to the weakness in Kohberger's petition. The hair evidence, even taken at face value, does not establish innocence. It establishes that someone else's hair was at the scene, in a house where multiple people lived, slept, and visited. For the evidence to matter legally, Kohberger would need to show not just that the hairs exist, but that their existence would have changed the outcome of a trial, and that his lawyers' failure to communicate their significance was so deficient it rendered his plea involuntary.
The hair evidence first entered public discussion through "Broken Plea," a book by Christopher Whitcomb. Kohberger referenced the book in his New York Times interview, using it to bolster his claim that critical evidence was kept from him. Turvey's independent examination of the physical evidence in Moscow appears to corroborate the existence of the hairs and the FBI's exclusion of Kohberger, but the question of whether that exclusion matters legally remains contested.
The mother of Kaylee Goncalves expressed disappointment but said she was not surprised by Kohberger's legal maneuver. For the families of Ethan Chapin, Xana Kernodle, Madison Mogen, and Goncalves, the petition reopens wounds from a case that was supposed to be closed. Four students were photographed together on Goncalves' Instagram the day before they were killed. Kohberger admitted to their murders in open court. Now he says he did not mean it.
The court has not yet acted on Kohberger's petition, and several critical questions remain unanswered. No filing date for the petition has been made public. The specific court handling the post-conviction proceeding has not been identified in available reporting. Whether a judge will order the kind of evidentiary hearing Turvey is demanding, one that would put Taylor and her team under oath, is entirely uncertain.
The FBI has declined to discuss the hair evidence or its lab findings. Taylor has not spoken publicly since the petition was filed. And Kohberger himself, who answered "Yes" when a judge asked if he was guilty, now insists from a prison cell that the whole thing was a lie his lawyers told him to tell.
A man who pleaded guilty to four murders, confirmed his guilt under oath, and accepted a deal that saved his life now wants the system to treat his word as credible. The families who buried their children are entitled to ask why anyone should.
