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During World War II, Laurence Gerard (Dick Powell) of the Royal Canadian Air Force was taken captive by the enemy, but now that the fighting is over he has begun a quest for vengeance. Laurence's wife was murdered while he was a hostage, and his desire to right this wrong takes him from Europe to South America. The supposed killer is a Nazi sympathizer named Jarnac (Luther Adler), but word has it that he is dead. Laurence, however, believes his target is alive and hiding out in Argentina. Wikipedia