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.

• Gaumont-British Picture Corporation
• Sylvia Sidney
• Oskar Homolka
• Desmond Tester
• John Loder
• Joyce Barbour
• Matthew Boulton
• S. J. Warmington
• William Dewhurst