# Kohberger's Knife Sheath: Why the Key Evidence Is Under Fire

Page: https://stenobird.com/podcast/the-idaho-murders-the-case-against-bryan-kohberger-6008349/kohberger-s-knife-sheath-why-the-key-evidence-is-under-fire
Text version: https://stenobird.com/podcast/the-idaho-murders-the-case-against-bryan-kohberger-6008349/kohberger-s-knife-sheath-why-the-key-evidence-is-under-fire.md
Podcast: [The Idaho Murders | The Case Against Bryan Kohberger](https://stenobird.com/podcast/the-idaho-murders-the-case-against-bryan-kohberger-6008349)
Published: 2026-05-04T17:00:00+00:00
Episode link: https://audioboom.com/posts/8897568
Audio file: https://dts.podtrac.com/redirect.mp3/audioboom.com/posts/8897568.mp3?modified=1777566738&sid=5098223&source=rss
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JSON: https://stenobird.com/v1/public/podcasts/the-idaho-murders-the-case-against-bryan-kohberger-6008349/episodes/kohberger-s-knife-sheath-why-the-key-evidence-is-under-fire
Duration seconds: 1375

## Resource

The knife sheath was everything. Found inside the King Road house where four University of Idaho students were fatally stabbed, it carried a single source of male touch DNA — later confirmed as Bryan Kohberger's. It was the prosecution's strongest physical link between the defendant and the crime scene. Without it, the case against Kohberger rested on cell phone tower pings, a white car, and circumstantial evidence. With it, the DNA made the case feel airtight. But was the sheath's journey from crime scene to lab properly documented? According to Brent Turvey — the forensic scientist Kohberger's own defense team hired — it was not. Turvey alleges the chain of custody label on the evidence bag was filled in after the fact by one person using one pen, with six recorded exchanges spanning multiple days all written in similar handwriting. Standard forensic protocol requires live documentation — each handler signing as the evidence changes hands. Turvey says what he found was the opposite: a record allegedly reconstructed, not created in real time. He says the sheath should have been challenged at trial. He says he told the defense team before Kohberger took the plea. He says they didn't pursue it. Anne Taylor's team has fired back, calling his conduct appalling and accusing him of violating his confidentiality agreement. Moscow Police Chief Anthony Dahlinger says the department uses electronic tracking and met all legal requirements. Idaho legal experts have pushed back on Turvey's conclusions. Former FBI agent Christopher Whitcomb adds to the picture in his new book "Broken Plea," which documents additional concerns — including untested hair found at the scene that the FBI lab reportedly confirmed was not Kohberger's, and competing expert opinions on whether one person co…

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