Bryan Kohberger’s Evidence Bag Was Allegedly Filled In Twice
About this episode
The episode discusses the alleged issues with the evidence bag in the Bryan Kohberger case and its implications for the trial.
The physical evidence tying Bryan Kohberger to the King Road crime scene came down to one item: a Ka-Bar knife sheath carrying a single source of male DNA matched to Kohberger. It was the prosecution’s anchor. And according to a defense forensic scientist who reviewed the chain of custody documentation, it may have been vulnerable to a challenge that could have kept it out of trial entirely. Brent Turvey, a criminologist with a Ph.D. and testimony in over seventy trials, alleges the evidence bag was documented retroactively. The bag appears to have been filled in twice, with the earliest visible date and initials of lead detective Brett Payne written over the evidence tape sealing the bag. Turvey told reporters the chain of custody was legally insufficient and that the sheath should have been ruled inadmissible. Moscow Police Chief Anthony Dahlinger pushed back. He stated the department uses electronic barcodes and numbered stickers rather than handwritten logs and that the process met legal requirements. Idaho State Police released a photo of the evidence bag showing an unbroken seal. The dispute never reached a courtroom. Kohberger pleaded guilty in July 2025 to four counts of…
People in this episode
Host: Tony Brueski
Guest: Brent Turvey
Topics covered
- evidence analysis
- forensic science
- legal challenges
- true crime
- murder case
- chain of custody
Mentioned in this episode
Organizations: Moscow Police, Idaho State Police
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