

The fifth season opens with a case involving a high-school girl who was murdered in 1985.

A cold case involving a 1988 murder in Sunset Beach, Cal., is investigated.

A 1992 case involving the shooting death of a Maryland businessman is investigated.

A 1990s cold case involving a serial rapist in St. Louis is reopened.

Examining a cold case involving a San Diego postal worker who was murdered in 1972.