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.
Romance | Thriller | War
| Boris Karloff | … | Valdar | |
| Margaret Lindsay | … | Helene von Lorbeer | |
| Bruce Lester | … | Frank Bennett | |
| Leonard Mudie | … | James Yeats | |
| Holmes Herbert | … | Arthur Bennett | |
| Austin Fairman | … | George Bennett |