Masterman was born in Kingston upon Thames, and educated at the Royal Naval College, Osborne, and Dartmouth, then at Worcester College, Oxford, where he read modern history. In 1914, at the outbreak of the … See more

In 1933, he wrote a murder mystery novel entitled An Oxford Tragedy, set in the fictional Oxford college of St. Thomas's. It was written in the point of view of an Oxford don named Francis Wheatley Winn, who was Senio… See more

When World War II broke out, Masterman was drafted into the Intelligence Corps. After investigating and producing a report into the evacuation of Dunkirk, Masterman was appointed as a Civil Assistant in MI5. Within MI5 … See more

Information about the double-cross system remained secret after the war. In 1958 Masterman began pressing the British intelligence establishment for permission to publish a book about it. Roger Hollis, the head of MI… See more

• An Oxford Tragedy, 1933 (mystery)
• Fate Cannot Harm Me, 1935
• Marshal Ney: A Play in Five Acts, 1937
• To Teach the Senators Wisdom, or, An Oxford Guide-Book, 1952… See more