In an interview conducted in 1971, which had never been broadcast in its entirety before until 2025, Hitler's architect and armaments minister, Albert Speer, is cross-examined by programme chair Michael Charlton, historian Hugh Trevor-Roper and diplomat George Ball; the latter two having served as Speer's British and American interrogators at the end of the war.

Albert Speer - Hitler's architect, arms minister and only friend. After the war, he became the Nazi who said sorry, even for the crimes he claimed had been kept secret from him. Was his remorse genuine, or did he know more than he admitted, still proud of his meteoric career under Hitler?