This episode looks back at three cases that stayed with detectives. In Dallas, a man is dismembered and burned and dumped in a lake. Then, in Tulsa, two kids find their mother dead in her car. And in Dallas, two friends are found burned in a car.

In Atlanta, Detective Summer Benton investigates a deadly dispute between roommates; in Rochester, Investigator Terry Dearcop breaks open the case of a husband's murder; and in Birmingham, Detective Cynthia Morrow must sort through varying versions of how a drug deal went bad.