Neil McDonald has had a deep personal connection to Rennes-le-Château and has been running tours to the area, studying the story and landscape deeply, as well as writing about it for many years. Thomas Sheridan, using his extensive knowledge of the occult and that of secret societies, as well as his understanding of the mysteries of the landscape, dove-tails his own insights into the story. The two men's combined research and discoveries have unearthed a spectacular new understanding of Rennes-le-Château and the story of the Abbé François Bérenger Saunière.