Harris and Dietrich bring in a suspect after he was caught robbing the police vault, looking to reclaim his television that was previously stolen. After Wojo and Luger bring in a suspect who was arrested using an antique gun during a holdup, Wojo shares his concern to Barney that his colleague might be going to extremes to end his life after he was demoted. A collector finds himself in trouble when his stash of antique guns that were previously stolen are being used in a rash of attempted robberies.