I had never seen any film, I had not even heard of the book until it was nominated here. I am a little over half way through now and each time I think I have where it is headed figured out that is dashed by new information or a new twist. So far I have also felt the need to go back and read the Prologue again twice.
I have been reminded why this sort of horror/mystery book is not something I usually read. Scary books scare me.