The Lost Hours is a 1952 British mystery drama film. It features Mark Stevens, Jean Kent, Garry Marsh, John Bentley, Duncan Lamont, and John Horsley.
During a London reunion of a World War II RAF unit, an American pilot gets into a fight with one of his buddies, who is drunk and belligerent. The next day the pilot wakes up in a strange hotel room with blood on his suit, and can't remember how he got there.