In the season premiere Burroughs travels to Mansfield, Ohio to look into the January 1998 murder of single mother Margie Coffey. Coffey's body was found frozen and strangled to death in a nearby creek in the dead of winter. As Burroughs digs into the evidence that was recovered at the scene, two microscopic fibers become the only way to find Coffey's killer. Over the course of the episode, Burroughs speaks extensively with the officers who investigated Coffey's murder, her family and friends, as well as sits down one-on-one for an intense conversation with her alleged killer.