The Book of the Law [is] an obscure prose poem written 100 years ago by Aleister Crowley, often described as the key to the notorious Magus's vast pantheon of writings. A multi-layered template of a magickal system ... The Book of the Law made Crowley one of the 20th century's hidden prophets. Hysterical press accounts of sex, drugs and sacrifice at his Abbey of Thelema, in Sicily in the early 1920s, remain the core of the myth of Crowley as evil incarnate. It was also Crowley who gave Churchill his famous victory sign, a magickal gesture to counteract the Nazi's use of the swastika. Indeed, his hand appears in many unexpected places ... but his hidden influence was not restricted to the British war effort. In the 1940s, one of his closest followers was a young Californian adept, Jack Parsons, one of the founding fathers of the American space programme. His work at the fledgling Jet Propulsion Laboratories lay the groundwork for the Apollo moon missions. Rocket fuel, space exploration and Crowley's brand of ceremonial sex magick was a powerful mix. Working with Parsons was none other than L Ron Hubbard, who later founded the cult of Scientology, which now attracts so many Hollywood stars. Hubbard would also abscond with Parsons' money and wife, but not before Parsons had written a fourth chapter" of The Book of the Law. His immediate following may have been small, but his influence on modern culture is as pervasive as that of Freud or Jung.