Shadow of Treason (1964) aka Ring of Spies BW PG-13 IMDb 6.7 1h 30min Crime, Drama, Thriller
Stars: Bernard Lee, William Sylvester, Margaret Tyzack
During the Cold War, a RN warrant officer stationed in the British Embassy in Warsaw leaks secrets to his Polish girlfriend who's a Soviet agent and after his transfer to a naval station in Britain he joins a Soviet spy ring.
Director: Robert Tronson
Writers: Frank Launder (screenplay), Peter Barnes (screenplay)