Turing said 'If a machine is expected to be infallible, it cannot also be intelligent.' Spring 1940, the Battle of the Atlantic rages. Vulnerable merchant convoys are at the mercy of German U-boats controlled by a cunning system of coded messages created by a machine called Enigma. Only one man believes that these codes can be broken - mathematician and Bletchley Park cryptanalyst Alan Turing. Winston Churchill later describe Turing's success in breaking the Enigma code as the single biggest contribution to the victory against Nazi Germany. Unheralded during his lifetime, he is now recognised as the father of modern computer science and as possessing one of the greatest minds of the 20th century. Here his ground-breaking work and his private side lifts the veil of secrecy, particularly with regard to his post-war contribution to computing science with the Americans and his work as Manchester Computing Machine Laboratory. Only in 1974 was the official ban on any mention of Ultra lifted. Watched by MI5, Turing died of cyanide poisoning. A vat of cyanide was found in the 'nightmare room' between his bedroom and the bathroom, and the coroner ruled that Turing had committed suicide 'while the balance of his mind was disturbed'. Yet no evidence was given about the state of his mind and the verdict has been questioned ever since. Slim illustrated biography, New full price paperback128pp.

20 million copies have been sold worldwide and this is a superb Penguin paperback reprint of the greatest success classic of all time. Regarded as the number one inspirational and motivational classic for individuals who are interested in furthering their lives and achieving their goals, the book draws inspiration from the lives of Andrew Carnegie, Thomas Edison, Henry Ford and other millionaires of his generation. Napoleon Hill was America's most beloved motivational author who devoted 25 years and interviewed over 500 affluent men and women of his time. He uncovers the secret to great wealth based on the notion that if we can think to learn like the rich, we can start to behave like them. By understanding and applying the 13 simple steps that constitute his formula, you can discover how the principle of autosuggestion can increase your confidence, magnetism and capabilities; how you can master your mind to receive ideas from the Infinite Intelligence; the method of accurate thinking; how to avoid anything that could impede your success. Kick start your journey of self-discovery today in chapters covering faith, desire, imagination, organised planning, decision, persistence, the power of the master mind, the mystery of sex transmutation, the subconscious mind, the brain and the sixth sense and how to outwit the six ghosts of fear. 'One of the most common causes of failure is the habit of quitting when one is overtaken by temporary defeat.' 266pp, paperback with fairly large print.

'Chess Records and the Business of Rock & Roll', Macher is a Yiddish word for a big wheel or an operator. On the South Side of Chicago in the late 1940s, two immigrants, one a Jew born in Russia, the other a black Blues singer from Mississippi, met and changed the course of musical history. Muddy Waters electrified the Blues, and Leonard Chess recorded it. Soon Bo Diddley and Chuck Berry added a dose of pulsating rhythm, and Chess Records captured that too. Rock & Roll had arrived, and an industry was born. In a book as vibrantly and exuberantly written as the music and people it portrays, Rich Cohen tells the engrossing story of how Chess, with the other record men, made this new sound into a multi-billion-dollar business, aggressively acquiring artists, strong-arming distributors, riding the crest of a wave that would crash over a whole generation. The book is full of absorbing lore and animated by a deep love for popular music - it's a big, tough, funny, clever story. Not politically correct, the book begins at a Bar Mitzvar and immediately draws connections between blacks and Jews. 220pp, photos.