Troy raids German HQ and kidnaps Dr. Schneidermann, a prominent Nazi scientist. At the same time, Captain Dietrich captures Moffitt, Pettigrew, and Hitchcock. Dietrich reveals that Troy is carrying a vial of deadly radium. He urges Moffitt to divulge Troy's destination, bargaining the Rat Patrols' unconditional freedom for the return of Schneidermann. Moffitt, disbelieving the radium story, keeps quiet. However, Troy is carrying the fatal vessel. The three Patrollers escape and trail Troy back to the rendezvous, with Dietrich trailing them.