

Germans kidnap an American major and try to convince him that World War II is over, so that they can get details about the Allied invasion of Europe out of him.
Acting
Garner's slow unraveling — you see him doubt reality itself.
Production
That fake hospital town — bonkers practical set design.
Writing
Tight psychological construction, every scene a trap.

Director
George Seaton
Trivia, insights & behind the scenes
Based on a real British operation called 'A Force' that used similar deception techniques, though this specific scenario was fictionalized.
Released the same year as Dr. Strangelove — Hollywood was deeply obsessed with psychological warfare and the fragility of truth during the Cold War.