This movie is flat. Scenes changed and I kept waiting for something to happen in a substantial way. There is some graphic violence, but it added little to any tension or actual drama, and if it had been edited out you probably wouldn't even notice. The character with the most chilling gravitas is the Matron. All of the "episodes" in the movie are way too thin and didn't allow for any character development. I also wondered if it was miscast. Sort of felt like it. The book is compelling, complex, and a page turner and you, the reader / viewer, actually engage the characters and care about them. Much, much better than this cinematic miss.