The Real Da Vinci Code

The phenomenal success of Dan Brown's book The Da Vinci Code has once again brought the Holy Grail and its myriad hunters into the spotlight. It may be a novel, but Brown has claimed that his book is based on research and that all the art, architecture and secret societies he describes are real. It's a controversial claim because, if based in truth, The Da Vinci Code threatens to turn our view of history on its head. Tony Robinson sets out to discover the facts about the Holy Grail and cut through the thicket of mystery that surrounds the subject.