To read the book or watch the movie first? I can't help myself so I would read the book if it came out early for sure, but it is a loaded question. Reading the book takes away all suspense. If you want to be scared during the film, then reading the book will deprive you of that. But reading the book first, allows you to get a head start on the analysis of the film. By the time you see it, you already have time to canalize plot points, and if the book has even more depth than the movie by including scenes that don't make the final cut, then this will enhance the joy of the film. You'd be watching it with greater insight. I'm going to read the book..