Alan Turing, subject of the Oscar-winning 2014 film The Imitation Game, was the brilliant mathematician solicited by the British government to help decipher messages sent by Germany's Enigma machines during World War II. The work of Turing and his colleagues at Hut 8 created what became known as the "bombe" which descrambled the German navy's messages and saved countless lives and millions in British goods and merchandise.

Despite his heroics, however, Turing led a secret life as a homosexual. After a young man with whom he was involved stole money from him, he went to the...