Richard Hanney has a rude awakening when a glamorous female spy falls into his bed - with a knife in her back. Having a bit of trouble explaining it all to Scotland Yard, he heads for the hills of Scotland to try to clear his name by locating the spy ring known as The 39 Steps.
Karl Anton Verloc and his wife own a small cinema in a quiet London suburb where they live seemingly happily. But Mrs. Verloc does not know that her husband has a secret that will affect their relationship and threaten her teenage brother's life.
Robert Tisdall finds on the beach the corpse of a woman he knew. Others wrongly conclude that he is the murderer. Fleeing, he desperately attempts to prove that he is not the killer. A young woman becomes embroiled in the effort.
