British Intelligence
movie

Although the home of cabinet minister Arthur Bennett is a hotbed of spies, moles, and double agents, no one knows the true identity of notorious German spymaster Strendler.
Released November 10, 1939
Overview
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.
Cast

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
- no image
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
- no image
David Cavendish
as
Capt. Lanark

Joe De Stefani
as
German Officer
- no image
Carlos De Valdez
as
Von Ritter