Since the creation of the British Secret Service in 1909, a rich tradition has developed in both fiction and non-fiction - from Graham Greene, Somerset Maughan, William Gibson and David Cornwell to Anthony Cavendish, Kim Philby, Derek Tangye and Peter Wright. In this anthology, espionage writer Nigel West seeks clues to authentic espionage incidents in fiction and highlights the most controversial passages in the non-ficton, scrutinizing both M15 and M16 pre- and post-war activity.