This book belongs to the pen of a famous diplomat, scientist, author of monographs and many popular books, including: "Modern Diplomacy: Theory and Practice," "Margaret Thatcher: A Man and a Politician," "Life at Buckingham Palace" and others. This time, the subject of his research was the life and work of one of the members of the "Cambridge Five" - Anthony Blunt. But this book is not only about him, but also about the entire famous "five" of Soviet intelligence officers who penetrated the holy of holies of Britain - in its intelligence and counterintelligence, in the army, the Ministry of Foreign Affairs and even in the entourage of King George VI and Elizabeth II.