5 Fingers included the James Mason character who was based on the secret agent for which group?
5 Fingers 5 Fingers, known also as "Five Fingers", is a 1952 American spy film directed by Joseph L. Mankiewicz and produced by Otto Lang. The screenplay by Michael Wilson was based on the book "Operation Cicero" (Original German: "Der Fall Cicero") (1950) by Ludwig Carl Moyzisch, Nazi commercial attaché at the German Embassy in Ankara (1943-44). In the film, James Mason plays Ulysses Diello (Cicero), the character based on Elyesa Bazna. The rest of the cast includes Danielle Darrieux, Michael Rennie, Herbert Berghof and Walter Hampden.
David Shayler David Shayler (born 24 December 1965) is a British former MI5 officer. Shayler was prosecuted under the Official Secrets Act 1989 for passing secret documents to "The Mail on Sunday" in August 1997 that alleged that MI5 was paranoid about socialists, and that it had previously investigated Labour Party ministers Peter Mandelson, Jack Straw and Harriet Harman.