An interesting setting houses an action-packed plot and some intriguing sci-fi ideas. But, the writing is clearly aimed a teen girl audience and to be sounds clumsy, particularly the narrator's inner monologue. I assume the movie will be retooled for a blockbuster's general audience by omitting the narration but keeping the violent action and will be, as a result, better than the book. If that turns out to be true, I will avoid the book sequels but see the movie sequels.