I have read a review of the novel because I have not been able to complete reading it. The film, while being vociferously opposed by the devout Catholics , more particularly Indian Catholics has already hit the theatres everywhere. What I understand is that the story is basically about Jesus and his supposed relationship with Mary Magdalene whose diaries survived giving tantalizing clues about the truth of Sacred Feminine .The painting "The Last Supper" is supposed to contain vital clues about the truth. Whatever be the historical fact the novel has made a lot of money and it is unlikely that the contents will make any difference to the faith of millions of devout Catholics.
The Da Vinci Code movie is likely to generate a whole new breed of believers who will take the fictional story seriously enough to start believing in its authenticity. Just like it happened with x-files .Hollywood audience is no different from our own back home Chennai audience who credited their movie heroes with supernatural powers.New cults may emerge or in the process religious faith may get a shot in the arm.