A former homicide detective, who was demoted to beat cop 15 years ago for publicly hanging a suspect off a bridge, is promoted to the Cold Squad. He and Nicco work on the case of a body found encased in concrete of a building under construction.

Len meets the "victim" of one of his old Homicide cases…alive…in the holding cell. Mickey is confronted with new developments in a cold case involving a four-year-old girl, whose decapitated body Mickey found when she was a patrol officer.