Having read the book a couple of years ago, I approached this movie with some trepidation...but what I saw on the screen was taut, well-crafted, and at times a breath-taking 140 minute thrill-ride! There are some differences, naturally--this IS Hollywood, of course. For example, the book was a prequel to daVinci Code, the movie is a sequel. For those of Scientific Bent, forget for a time what you know about atomic collisions and antimatter...this is pure escapist entertainment...and one I'll definitely be seeing again.