The Holy Grail is the name given to the alleged cup used by Jesus of Nazareth during His last meal with His disciples (depicted beautifully in Da Vinci's "The Last Supper"). Tradition and history have provided clues that this Holy Cup of Christ might possibly exist today, hidden away in the Cathedral of Valencia in Spain. Could it be that the Holy Chalice of Valencia is the real Holy Grail? And could there actually be more than one authentic Cup of Christ?