Kim Philby was the greatest spy in history, a brilliant and charming man who rose to head Britain s counterintelligence against the Soviet Union during the height of the Cold War while he was secretly working for the enemy. And nobody thought he knew Philby like Nicholas Elliott, Philby s best friend and fellow officer in MI6. The two men had gone to the same schools, belonged to the same exclusive clubs, grown close through the crucible of wartime intelligence...