For Capt. Robert John Evans (Ray Milland), smuggling black-market goods is nothing out of the ordinary. But one day he's hired by Aristides Mavros (Claude Rains) for a more involved assignment -- sneaking an imprisoned American out of communist-controlled territory. The job seems challenging enough, but when he meets the prisoner's sultry wife, Sylvia (Maureen O'Hara), he realizes his mission comes with a startling catch: Not only must he rescue this man, he must bring him back from the dead.