For the Allied prisoners of Stalag 17, every escape attempt ends the same way: disaster. Cynical Sgt. Sefton (William Holden, in his Oscar-winning role) thinks they're all fools for trying -- but soon his hectoring starts raising suspicions that there's a German spy among them. Could that spy be him? Director Billy Wilder effortlessly mixes broad comedy and high-tension drama in this World War II classic.