A group of men parachute into Japanese-occupied Burma with a dangerous and important mission: to locate and blow up a radar station. They accomplish this well enough, but when they try to rendezvous at an old air-strip to be taken back to their base, they find Japanese waiting for them, and they must make a long, difficult walk back through enemy-occupied jungle.
When Dr. Anthony Edwardes arrives at a Vermont mental hospital to replace the outgoing hospital director, Dr. Constance Peterson, a psychoanalyst, discovers Edwardes is actually an impostor. The man confesses that the real Dr. Edwardes is dead and fears he may have killed him, but cannot recall anything. Dr. Peterson, however is convinced his impostor is innocent of the man's murder, and joins him on a quest to unravel his amnesia through psychoanalysis.