The extraordinary story of the most highly decorated British spymaster of the Cold War, Sir Maurice Oldfield. Chief of the Secret Intelligence Service (commonly known as the SIS or MI6), he was the first Chief to be named and pictured in the press, and often alleged by them to be the model for the screen versions of both Ian Fleming's M and John Le Carre's George Smiley. This major study of Oldfield's life portrays one of the UK's most important and complex spies of the Cold War era. He was the first Chief of MI6 that hadn't come from an upper-class background or studied at Eton or Oxbridge. Rather, he was a farmer's son from a provincial grammar school who found himself accidentally plunged into the world of espionage by the outbreak of the Second World War.