Dan Brown is on to a winner here. IF The DaVinci Code is taken to be a work of fiction all around. The first page is misleading: taking any of the historical and art historical background used in this book for real is absurd.
The plot itself could not be more suspenseful, a sure page-turner. The nagging question "What historical nonsense will Brown come up next?" only adds to that.
As long as the reader remains critical, this book can do no harm and is sheer fun!