Is this a good Da vinci code review essay? how to make it better?

What if you were told that the greatest story ever told was actually a cover up? The Da Vinci code is one of those books and also of the world’s most controversial novels yet. The book starts out in Paris, were a murder has taken place inside the Louvre, a Paris museum. It is up to our Heroes, Robert Langdon and Sophie Neveu to solve the decrypted messages left behind by Jacques Sauniere to solve the code that could change mankind forever. The quest to solve the messages won’t be easy though, as there are countless characters trying to prevent them from their mission, sometimes by any means necessary. It is later revealed that they are on a search for something that mankind has been searching for since the beginning of Jesus Christ, The Holy Grail. But what everyone was taught, turns out to be a lie, The Holy Grail is not a physical chalice, but a woman, namely Mary Magdalene, who carried the bloodline of Christ. The evidience of this is clearly shown in the novel.