The Abbé Bérenger Saunière didn't find anything. It is all a hoax.

Yes, the whole story is a hoax that was started during the mid-1950s by a hotelier and failed-novelist Noël Corbu. He eventually got fed-up and moved away from Rennes-le-Château in 1964, moving to the Château of Saint-Félix-Lauragais.

However, the genie was let out of the bottle and a whole series of accretions and layers of falsehoods began to develop around the story – none of which can be verified from the priest's lifetime – all of which became instantly addictive and are nothing more, under closer examination, than a series of patchwork of lies.

The whole story is ignored by the French Ministry of Culture and the regional archaeological society known in France as DRAC (Direction régionale des affaires culturelle – Regional Directorate of Cultural Affairs). No matter how well-packaged the hoax is put. The storytellers are all uncritical.

The spinners of the yarn are unable to get out of this latter point.

As for “shaking” Christianity – that’s already there, in the good Book.