The recent phenomenal success of Dan Brown's Book, 'The Da Vinci Code, has once again brought 'The Holy Grail' and its myriad of 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. Millions of readers have been hooked, but do its major claims stand up to scrutiny? Has the truth about the Holy Grail been suppressed by the Catholic Church? Is the real truth about the Grail encoded into Leonardo's great painting of the Last Supper? In this highly informative video, Tony Robinson sets out to discover the facts about the Holy Grail and cut through the thicket of mystery that surrounds the subject. Like many grail hunters before him, has Dan Brown been duped and could one of the most alluring elements of the modern grail obsession be an elaborate hoax?