The Circus MI5 Operations 1945 1972 Author:Nigel West This book details the failures of British intelligence to detect the Soviet spies high up in its own ranks — The author refers to 'this final version' as 'the most detailed account of MI5s work ever published' and 'for those who find it closer to fiction than fact, they have MI5s word for it that it is indeed all too terribly ... more »true.'« less