When the body of an ex-mobster who was in witness protection turns up in a riverbed with a bullet in the forehead, Jane and the team trace the body back to find a list of suspects -- The wife, the boss, the two Federal marshals on supervisory detail, the local biker gang member, and the mobster whose two sons went to jail by his testimony, who "just happens" to have retired nearby.

Meanwhile, it's Lisbon's birthday. Did Jane forget?