The Defector is a 1966 thriller film. Montgomery Clift plays Professor James Bower, an American physicist, who is effectively blackmailed by a shady CIA agent named Adam (Roddy McDowall), to help the CIA obtain secret microfilm from a defecting Russian scientist. The reluctant Bower travels to East Germany, undercover as an antiques collector where he encounters an East German secret agent, Peter Heinzeman (Hardy Kruger), who is also a fellow physicist. Heinzmann is aware of Bower's meeting with Adam and his intention to steal the microfilm. However their mutual respect for one another complicate the proceedings. This was Clift's last film and though obviously ill, he still manages to give a convincing performance in this very moody and sombre movie. This characterization is in stark contrast to the exuberance displayed by his leading lady, Macha Meril.