Lilly and the team re-open the 1968 killing of a local cop suspected of being a homosexual.

The word on the street is that Coop was involved in a drug bust gone bad, however, Lilly secures information that would lead her to believe that Coop was romantically involved with his partner, Jimmy, which did not sit well with the rest of the force. Lilly and the team must now open old wounds and track a killer, even if it is one of their own.