The Holy Grail and Royal Blood

In France a tiny village has attracted treasure hunters for the last 70 years. At the end of the 19th Century, priest of Rennes-le-Château, Bérenger Saunière, became fabulously rich. And nobody quite knows how. Some say the priest discovered buried treasure, but others claim Saunière uncovered a secret so profound, it could rock the foundations of the Catholic Church. But was it all just a hoax?