 A man just released from prison hurries down a dark street, sees a patrolman, then breaks into a run. He runs to a warehouse, where he s attacked by a gunman. In the struggle, the assailant is killed. The ex-con hires Peter Gunn to find his girlfriend, to help the ex-con beat the murder charge. Police Lt. Jacoby confides to Gunn that the dead man is a hired killer, and the ex-con took the rap for a payroll robbery, from which the take was never found. Gunn tracks down the girlfriend, who has no interest in helping, because she has a new lover. He s the ex-con s partner - who didn t go to prison.