Christopher Knight has written five very successful books. His first book, The Hiram Key, co-authored with Robert Lomas, was published in 1996 and it immediately went into the UK top ten, bestseller list and remained there for 8 consecutive weeks. It has since been translated into 37 languages and sold over a million copies worldwide, becoming a bestseller in several countries. Alan Butler, a qualified engineer, but always fascinated by history made himself into something of an expert in astrology and astronomy. He has published four successful books on the Knights Templar and the Grail legend. He is also a published playwright and a very successful radio dramatist. They are co-authors of the best selling Civilization One.