The case of a gruesome stabbing death of a bullied teenager remains unsolved for 27 years – until a rookie cold case detective sees a new clue in an old crime scene photo, leading her to a killer that everyone thought could not possibly have committed the crime.

College student Brad Perry shows up to work his graveyard shift at the gas station and is never seen alive again. It will take twenty years, the uncovering of an illegal drug ring in a squeaky-clean Mormon town, and the development of new forensic technology to solve this cold case.