Join the quest for the secrets of the Holy Grail, a tantalizing mystery that has intrigued scholars for generations. Learn how an object, which some believe may have held the very blood of Christ, was connected to two of the world's most secretive groups - the Cathars and the Knights Templar - and to the legends of King Arthur. Was it a real chalice, perhaps the one that Christ drank from at the Last Supper. Or was it used to catch the blood of Christ during his crucifixion? And if it is real, what happened to it? Or is it, as some claim, not a physical object but a symbol of mankind's quest for faith? Find the answers to these enduring mysteries on this incredible journey across the Holy Land and Europe - from Jerusalem in the east to Glastonbury in the west. Is the Grail myth or reality? You decide.