I was wondering why they made so many changes from the book to the movie. First they leave out a sister and than they change the killer of Jo's mother. In the book Nate's father had killed Jo's mother all those years ago keeping photos and a journal about it so he could relive it whenever he wanted. David found it and began to fantasize about repeating the act. So he faked his own death and started stalking Jo. That is when Nate found out what their father had done and went to the island to tell the family. But in the movie they have it as David killed Jo's mother when he was 15 years old. The movie was alright but it just came off a little rushed.
Review of Sanctuary
