In his new book, *Master of Lies*, author Piers Blofeld delves into the life of Anthony Blunt, an art historian who served Queen Elizabeth II and was later exposed as a Soviet spy. Blunt, who had once embraced communism during his time at Cambridge in the 1930s, became disillusioned with Stalin's regime but continued to operate in high society. His role as the Surveyor of the Queen’s Pictures allowed him unprecedented access to the royal family, raising eyebrows when he was revealed as 'the fourth man' of the Cambridge spy ring in 1979. Despite confessing to MI5 about his espionage activities in 1964, the secret was kept from the Queen for another decade. When she was finally informed, she reportedly did not express outrage, likely due to Blunt's assistance in her marriage to Prince Philip. Furthermore, new evidence suggests that Blunt may have also provided crucial military information to the Nazis during World War II, leading to the deaths of thousands of British servicemen. Blofeld's exploration of Blunt's treachery raises profound questions about loyalty and betrayal, leaving readers to ponder the motivations behind such a quintessentially English figure's actions.