I've been asked to post some additional information on the Da Vinci Code. As the "Homily Helps" at Da Vinci Outreach (from which I'll be liberally quoting) note, "the book’s primary attack is ultimately not on the Church but on the person of Jesus Christ."
These Homily Helps go on to say, "The book claims that Jesus was not the divine Son of God; that He was married to Mary Magdalene and had children with her; and that, by order of the Roman emperor Constantine, the Church “made” him divine at the Council of Nicea."
"In effect, The Da Vinci Code reduces Jesus to a mere “mortal prophet, a great and powerful man” (as the book puts it) who had a girlfriend. Of course, one cannot deny Christ’s divinity and still end up with Christianity. The very person of Jesus—who He is—forms the very foundation of the Christian faith."
"Throughout the work, Brown refers to “the Vatican” as the location of corrupt Church power. For example, according to Brown, it was “the Vatican” who ordered the suppression of women and the “sacred feminine” in the early centuries of the Church. This would be difficult to accomplish given that “the Vatican” (i.e., the Vatican hill in Rome, the site of present-day Vatican City) would not become the seat of Church power until the 12th century. In the early centuries of the Church, it simply did not exist."
"Brown claims that the early Church suppressed women and replaced worship of the “sacred feminine” with a “male God.” This suppression of women is, of course, hard to square with the Church’s obvious veneration of the Blessed Virgin Mary and the unique exaltation she enjoys above all the saints."
"None of the most controversial claims made in The Da Vinci Code have any historical evidence to back them up. In fact, Dan Brown’s primary sources have been highly criticized by historians for their wholly unsubstantiated (i.e., made up) claims regarding the history of Christianity."
Here is a Catholic Answers summary of claims in the book which explain why Catholics should be concerned about The Da Vinci Code:
- Jesus is not God; he was only a man.
- Jesus was married to Mary Magdalene.
- She is to be worshiped as a goddess.
- Jesus got her pregnant, and the two had a daughter.
- That daughter gave rise to a prominent family line that is still present in Europe today.
- The Bible was put together by a pagan Roman emperor.
- Jesus was viewed as a man and not as God until the fourth century, when he was deified by the emperor Constantine.
- The Gospels have been edited to support the claims of later Christians.
- In the original Gospels, Mary Magdalene rather than Peter was directed to establish the Church.
- There is a secret society known as the Priory of Sion that still worships Mary Magdalene as a goddess and is trying to keep the truth alive.
- The Catholic Church is aware of all this and has been fighting for centuries to keep it suppressed. It often has committed murder to do so.
- The Catholic Church is willing to and often has assassinated the descendents of Christ to keep his bloodline from growing.
John Hellman has an excellent site on The Da Vinci Code if you want more information.