Alan Turing was an extraordinary man who crammed into his 42 years the careers of mathematician, codebreaker, computer scientist and biologist. He is widely regarded as a war hero grossly mistreated by his unappreciative country, and it has become hard to disentangle the real man from the story. Now Dermot Turing has taken a fresh look at the influences on his uncle’s life and creativity, and the creation of a legend. He discloses the real character behind the cipher-text, answering questions that help the man emerge from his legacy: how did Alan’s childhood experiences influence him? How did his creative ideas evolve? Was he really a solitary genius? What was his wartime work after 1942, and what of the Enigma story? What is the truth about the conviction for gross indecency, and did he commit suicide? In Alan Turing Decoded, Dermot’s vibrant and entertaining approach to the life and work of a true genius makes this a fascinating and authoritative read.

‘A cracking read.’

‘For anyone seeking a more nuanced picture of the human side of Turing . . . this book makes a useful and sometimes poignant contribution.’

‘Deserves a place on the bookshelf of anyone interested in the history of Bletchley Park and in the development of the computer.’

‘[Dermot Turing] has done a fabulous job of translating the complexities of mathematics and the early computer science to the lay person.’

DERMOT TURING is the author of X, Y and Z: the Real Story of how Enigma Was Broken; Alan Turing Decoded; and Enigma Traitors, which reveals the inadequacies of Allied codes during the Second World War. He began writing in 2014 after a career in law. He is a trustee of The National Museum of Computing and a Visiting Fellow at Kellogg College, Oxford. Dermot is married with two sons and lives in Kippen in Stirlingshire.