Jesus Gospel or DaVinci Code

Is "The Da Vinci Code" just a harmless novel, or is there something more dangerous or even dishonest about it? If the New Testament Gospels are in its sights, what is it that is causing such a stir? And how should a reader respond to it? Is it to be ignored or taken head on? Is it a powerful tool or just another broken hammer? Are its claims true or ...?