In World War I, a skilled German spy named Helene von Lorbeer goes undercover in London, taking up residence with a prominent British official's family, with the aim of meeting with the family's butler, Valdar, who is also a spy, and assisting him in transmitting crucial war plans back to Germany.
British Intelligence
In the midst of a cabinet minister's household, a tangled web of espionage and deception unfolds as a cunning German spymaster, Strendler, expertly conceals his true identity.