This movie was abysmal. The casting seemed great and the acting was fine. The gore was not overboard. The story felt disconnected and disjointed. There was no explanation for why things happened.
It says in the credits it is based off the book, and it is a rather loose interpretation of said book. I mean, to the point, it seems someone read the book as a child and wrote this movie later on in life from memory with lots of holes in it.