Real Places, Unreal History

Brown blends real locations — the Louvre, Westminster Abbey, the Temple Church — with speculative history about Mary Magdalene, the Holy Grail, and secret societies. The Catholic Church publicly condemned the novel, which handed it the best free marketing in publishing history.

The Vatican's condemnation turned a competent thriller into a cultural phenomenon — proof that telling people not to read something almost guarantees they will. Brown tapped a widespread distrust of institutions, giving readers permission to question stories they had simply accepted.