The Enigma Spy: An Autobiography - The Story of the Man Who Changed the Course of World War Two - Tapa blanda

John Cairncross found himself amongst the English upper class elite (himself being of modest Scottish background) at Oxford, at the same time as Blunt, Klugmann, and latterly Burgess and Maclean. He became a spy for the KGB, but only handed them material he believed would help the British cause.