Rent Triple Cross (1966)

Suave, witty, daring, handsome and utterly amoral, British safe-cracker Eddie Chapman (Christopher Plummer) is quite prepared to work for whichever side offers him the greatest thrills - and the most money. he can either offer his services as a spy to the Nazis or remain loyal to Britain and face a lengthy jail sentence. He opts for the former. But various Nazis doubt Chapman's loyalty to their cause, and with good reason. Making contact with the British, Chapman offers to act as a double agent - for a fee, or course. Thus a 'legend' is born. But just how far is Chapman prepared to lie and scheme to help one side win the war?