It has a good take and ideas, but, they took important scenes from the book and completely disregarded them. Yes, Ik why they do this, but half of these scenes don't cut away from the movies time. SPOILER!!
For example, they said the changing happened because of being stungz but in the books that they based it off, it's because of the serum that cures you. Now, this may just be my opinion, but I feel like they're just being lazy not adding that to the movie because this takes a big part From the book, that leads to whole lot of I'mportant events, and didn't even add it to the movie. But in all honesty, unless you're like me, and are very nitpicky, I would recommend this movie.