Synopsis: After three British agents are assigned to assassinate a mysterious German spy during World War I, two of them become ambivalent when their duty to the mission conflicts with their consciences.
Alfred Hitchcock reflected (regarding John Gielgud's lack of heroics): "You can't root for a hero who doesn't want to be one."
Alfred Hitchcock convinced John Gielgud to play the lead by describing the hero as a modern day Hamlet. Gielgud, however, ended up hating that his character was an enigma and felt Hitchcock made the villain more charming than the hero.
