On June 13, 1987, Cathy Sposito, a 23-year-old college student and avid hiker, set out for a morning walk on the Thumb Butte Trail in Prescott, Arizona. She never came home. Other hikers heard her screams, but by the time they reached her, she was dead, killed by blunt force trauma. The case haunted the community for three decades. Then, in a breakthrough, DNA evidence from a 2017 re-investigation was matched to Bryan Scott Bennett, a local high school student at the time of the murder. Bennett had died by suicide in 1994, but his exhumed remains confirmed his guilt, finally bringing closure to Cathy's family.