Bryan Kohberger, the man convicted of the murders of four University of Idaho students, has filed a petition to challenge his guilty plea, citing that he was misled. Kohberger, now 31, agreed to a plea deal in July 2025 to avoid the death penalty, receiving four consecutive life sentences. The decision to accept the plea deal meant that a trial, which could have resolved many lingering questions about the case, did not occur.
A new three-part Netflix series, "The Idaho Murders: College Nightmare," aims to provide a comprehensive account of the crime, incorporating new details and interviews with the victims' families. The documentary highlights the compelling evidence against Kohberger, who was pursuing a PhD in criminology at Washington State University, located just eight miles from the victims' home. Prosecutors presented evidence including Kohberger's DNA found on a knife sheath near two victims, Amazon records of a similar knife purchase, surveillance footage of his vehicle near the students' house on the night of the murders, and his mobile phone records showing repeated visits to the neighborhood. Kohberger also lacked a solid alibi for the night of the killings, stating he was alone and stargazing.
Despite the evidence, significant questions remain unanswered, including Kohberger's motivations for the killings and why these specific students were targeted. Kohberger had a history of personal struggles, including being bullied in high school, a heroin addiction, and difficulties connecting with others, particularly women. His defense team suggested he had autism, though this was not definitively established by the court. Kohberger himself had spoken online about mental health issues, tinnitus, and visual snow syndrome, which he claimed affected his perception of reality.
Investigators believe the "party house" atmosphere of the victims' residence, coupled with a TikTok video they posted showcasing the house layout, may have made them targets. Forensics experts noted that the video could have provided a guide for an intruder. The victims were Madison Mogen, Kaylee Goncalves, Xana Kernodle, and Ethan Chapin. Some speculate that Kohberger, described as anti-social and potentially misogynistic, may have targeted the women due to their perceived popularity and outgoing nature.
Howard Blum's 2024 book suggests Kohberger's initial target may have been Madison Mogen, with the other victims being unintentional casualties. The book posits Kohberger encountered Mogen at her workplace and subsequently tracked her and her housemates through social media. He reportedly followed Mogen on Instagram, liking many of her photos. The theory suggests Kohberger entered the house through the first floor and proceeded directly to the top floor where Mogen slept, finding Goncalves with her. The two victims on the lower floor may have been killed as Kohberger left the house.
An alternative theory suggests Goncalves might have been the intended target, as she had previously reported feeling watched or followed. The murder weapon, a seven-inch Ka-Bar combat knife, has never been found. Investigators believe Kohberger purchased it online months before the attack. The knife's sheath, however, was recovered and matched to Kohberger through DNA testing.
Questions have also arisen regarding the possibility of an accomplice. Strands of hair found on victim Ethan Chapin did not match Kohberger's DNA. Forensic scientist Brent Turvey analyzed crime scene evidence and argued for the involvement of more than one person, citing hair samples found on a bedframe that reportedly did not match Kohberger's. However, others caution that hair transfer is common in a shared living space with frequent visitors.
The delay in the surviving housemates, Dylan Mortensen and Bethany Funke, calling the police for approximately eight hours after the incident has also drawn scrutiny. Mortensen reported hearing a scream, seeing a masked figure, and subsequently locking herself in her room in a state of shock. She and Funke spent hours trying to contact friends before contacting authorities. Police chief Anthony Dahlinger noted that shock and trauma can significantly impair judgment and thought processes. Some friends of the victims also acknowledged the difficulty of the situation for the survivors, while others find the delay inexplicable.
Kohberger's family, including his parents Michael and Maryann, and his sister Mel, a mental health therapist, have also been subjects of inquiry. Critics questioned how much they might have known prior to his arrest. A claim suggested Mel may have suspected her brother after observing unusual behavior, but she has publicly stated she never suspected him and warned him about the "psycho killer" on the loose. She maintained she would have reported him if she had any reason to believe he was involved. His arrest reportedly surprised Kohberger as well.