British Intelligence: Enemy Within: Classic Movie

Starring classic horror actor, Boris Karloff, British Intelligence is a real wartime gem. German spy master, Helene von Lorbeer is sent to London to work undercover with the family of a British high-ranking official.

Here she meets up with a fellow spy, the butler Valdar. Together they begin sending secret war plans back to the German high command. It's up to British Intelligence to stop them.