Agent Jack: The True Story of MI5's Secret Nazi Hunter

''Highly readable'' Ben Macintyre
''Pacy, original and frequently chilling'' Henry Hemming

June 1940. Britain is Europe''s final bastion of freedom - and Hitler''s next target. But not everyone fears a Nazi invasion. In factories, offices and suburban homes are men and women determined to do all they can to hasten it.

Throughout the Second World War, Britain''s defence against the enemy within was Er...