anything about Ultra, still highly secret, that greatly aided the double-cross system. The ban on Ultra would be lifted in 1974. Published works 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 The Case of the Four Friends, 1956 Bits and Pieces, 1961 The Double Cross System in the War of 1939 to 1945, Yale, 1972 (printed privately in 1945) On the Chariot Wheel: An Autobiography, Oxford, 1975. See also List of Vice-Chancellors of the University of Oxford Notes References Masterman, J. C. The Double-Cross System – With an Introduction by Nigel West. Vintage Books, London, 2013. External links An article on J.C. Masterman by Martin Edwards Cricinfo: Sir John Masterman 1891 births 1977 deaths English mystery writers Royal Navy personnel of World War I People educated at the Royal Naval College, Osborne Graduates of Britannia Royal Naval College Military personnel from Surrey Alumni of Worcester College, Oxford Provosts of Worcester College, Oxford Fellows of Christ Church, Oxford Vice-Chancellors of the University of Oxford English cricketers Free Foresters cricketers World War I civilian detainees held by Germany Oxfordshire cricketers Harlequins cricketers English male novelists 20th-century English novelists Officers of the Order of the British Empire British male tennis players 20th-century English historians 20th-century English male writers People from Kingston upon Thames Tennis people from Greater London English male non-fiction writers H. D. G. Leveson Gower's XI cricketers