Hans Christian Blech
Set during World War II's waning days, this taut thriller stars Oskar Werner as Cpl. Karl Maurer, a turncoat German prisoner of war sent on a dicey espionage mission as the Allies get ready for a final onslaught. But Col. Devlin (Gary Merrill) and Lt. Rennick (Richard Basehart) -- the Americans in charge of pulling off the radical scheme -- harbor grave doubts about where Maurer's loyalty lies. The 1951 film snagged an Oscar nod for Best Picture.