I agree. That's what I figured they do anyway. It's weird though that publishers still expected people to the buy the book and they did...

yeah, but sometimes I think its easier to get people addicted to books and wanting to read on because of the descriptions in the book and how you can sort of get in their heads to understand where the characters are coming from, whereas a movie doesn't have that so it could just be like 'um ew incest nope'