Maxwell Knight was a paradox. A jazz obsessive and nature enthusiast, he is seen today as one of MI5's greatest spymasters, a man who did more than any other to break up British fascism during the Second World War - in spite of having once belonged to the British Fascisti himself. This book features his story.

This is the story of Maxwell Knight, MI5's greatest spymaster. Drawing on declassified documents, private family archives and interviews with retired MI5 officers, this legendary spymaster was reportedly the first in MI5 to see the potential in training female agents too. A big budget TV show based on the book has been confirmed.