Book of Donmon Teith

As the German military grew in the late 1920s, it began looking for a better way to secure its communications. It found the answer in a new cryptographic machin

In 1963 a schoolboy browsing in his local library stumbled across a great mathematical problem: Fermat's Last Theorem, a puzzle that every child can now underst

The complete story of how the German Enigma codes were broken. Perfect for fans of THE IMITATION GAME, the new film on Alan Turing's Enigma code, starring Bened

The bestselling author probes the ultimate significance behind today's increasing reports of UFOs, alien abductions, crop circles, and other unexplained phenome

December, 1932 In the bathroom of a Belgian hotel, a French spymaster photographs top-secret documents – the operating instructions of the cipher machine, Eni