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.

Boris Karloff
as Valdar

Margaret Lindsay
as Helene von Lorbeer

Bruce Lester
as Frank Bennett

Leonard Mudie
as James Yeats

Holmes Herbert
as Arthur Bennett

Austin Fairman
as George Bennett

William Bailey
as British Intelligence Agent

Louise Brien
as Miss Risdon - Bennett's Secretary

Glen Cavender
as Under Officer Pfalz

David Cavendish
as Capt. Lanark
CinemaSerf
On the face of it, this is just another wartime espionage story where the ending is never really in any doubt. Actually, though, the plot is a bit more interesting. Set during WWI, Margaret Lindsay ("Helene von Lorbeer") is sent to London, to the home of Cabinet Minister "Arthur Bennett" (Holmes Her...