The 90-minute premiere episode delves into a 1980 murder in Williamsburg, Iowa where two hotel guests were founded bludgeoned to death in their room at a Holiday Inn. Each subsequent hour-long episode will focus on a new brutal murder where many questions have been left unanswered. Additional cases include a young woman found stabbed to death along railroad tracks in Kansas City, KS; a murder of a socialite in Georgia whose case involves a mysterious letter allegedly sent from the killer; a man who was found dead in his home after answering an online post for a renter; a homicide of a nun found 100 yards from the convent; and a grandmother stabbed to death in her home in broad daylight.

With unprecedented access to crime scene photographs, case files and evidence, Holes investigates each crime utilizing his unique forensic and behavioral skillset. Hoping to zero in on the profile of the perpetrator, he lends his expertise in the latest technological advancements from familial and genetic genealogy to latent fingerprint and DNA phenotyping, the process of predicting physical appearance from DNA.

Investigator Paul Holes spent two and a half decades looking for one of the most elusive serial killers in US history, the Golden State Killer. After retiring from his position as Cold Case Investigator/Chief of Forensics for the Contra Costa District Attorney’s Office in California, he continued to work on the case until he helped capture the alleged killer, Joseph James DeAngelo. Working with a team of investigators, Holes’ use of cutting-edge DNA technology proved crucial to closing in on DeAngelo. Holes was launched into the national spotlight and became an overnight hero in the crime and justice community.