A team of civilian experts, including a criminologist, a psychotherapist, and a private investigator, re-examine the 1983 cold case murder of 17-year-old Donna Jean Awcock. As they piece together the timeline of her final hours, they uncover a web of connections involving a local man who boasted about his involvement in the crime, forcing the team to confront the chilling possibility that the killer was hiding in plain sight all along.