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.

• Gaumont-British Picture Corporation
• Robert Donat
• Madeleine Carroll
• Lucie Mannheim
• Godfrey Tearle
• Peggy Ashcroft
• John Laurie
• Helen Haye
• Frank Cellier