The Prisoner (1955)

Director: Peter Glenville
Cast: Alec Guinness, Jack Hawkins, Jeanette Sterke, Kenneth Griffith, Mark Dignam, Raymond Huntley, Ronald Lewis, Wilfrid Lawson

Synopsis:

A cardinal is arrested for treason against the state. He is a popular hero of his people, for his resistance against the Nazis during the war and his resistance when his country again fell to a totalitarian conqueror. In prison, his interrogator is determined to extract a confession of guilt, and thus destroy his power over his people.