Kim Philby Books in Order

Harold Adrian Russell "Kim" Philby was a British intelligence officer and a double agent for the Soviet Union. In 1963 he was revealed to be a member of the Cambridge Five, a spy ring which had divulged British secrets to the Soviets during World War II and in the early stages of the Cold War. Of the five, Philby is believed to have been most successful in providing secret information to the Soviets.