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.

When 18-year-old Shannon Siders' body is found in the woods, everyone in the small town of Newaygo, Michigan, becomes a suspect - but no one is convicted of the crime. It takes 22 years for a special cold case unit - along with the help of the entire town - to solve Shannon's murder.