Tim Wallace-Murphy is an author, lecturer and historian and has written several bestsellers: The Mark of The Beast (with Trevor Ravenscroft), Rex Deus. The True Mystery of Rennes-Le-Chateau and Rosslyn: Guardian of the Secrets of the Holy Grail, which provided invaluable, source material to Dan Brown for his best-selling novel, The Da Vinci Code. His most recent book is Cracking the Symbol Code.
