During WWI pretty German master spy Helene von Lorbeer is sent undercover to London to live with the family of a high-placed British official where she is to rendezvous with the butler Valdar, also a spy, and help him transmit secret war plans back to Germany.

• Warner Bros. Pictures
• Boris Karloff
• Margaret Lindsay
• Bruce Lester
• Leonard Mudie
• Holmes Herbert
• Austin Fairman
• William Bailey
• Louise Brien