As a great fan of the series, and specially the last book, I enjoy seeing the story brought to life. Although the book doesn't have the wolves and the Cullens actually fighting, it doesn't depart from the spirit of the story. I suspect if you hadn't read the book, there are times when the viewer would not know what was happening....the transformation into vampire, and the imprinting. For me it was a satisfying movie. I will see it a second time after a few weeks.