My major gripe with this movie was how strictly it attempted to adhere to the book, even though that's what I wanted it. Confused? I bet. There were things they included in flashbacks that I thought were just there to throw a bone to those who have read the book. They made absolutey no sense to someone who hadn't. I would bet there was not a single person who hadn't read the book who was able to pick up anything about the monk's and the Bishop's past. The flashback left me kind of confused. I could cite several of these but I think you get my point. I'm not sure why they changed some of the other things also. Like Langdon being at a book signing when the French police grab him. This throws the whole timing of that evening off since he was at his lecture, then says he was supposed to meet Sauniere and waited for an hour...etc. Just didn't flow right. A little more detail on his "escape" from the Louvre would have been nice too. The book did a nice job here. Also omitted the gun standown at the DaVinci painting. Changed the ending....blah blah. Still enjoyed the movie but left feeling they could have done so much better.