Patrick Cassidy

Castle and Beckett must investigate a mysterious case from 1947 in order to solve the present-day murder of a treasure hunter.

When the team stumble on a murder victim while out on patrol with the Las Vegas police's mobile crime unit, the suspects include several street criminals whom they have already arrested. The case becomes personal for Brass when it turns up some information on his daughter.

Jim does more harm than good when he stands up to Dana's boss, and Andy has trouble making arrangements for his birthday party.