Beware: Not all the horror coming out of Hollywood this days is in the form of film.
Some film option contracts being offered to writers these days are a crime. OK, not legally, but ethically. This post from Kristine Kathryn Rusch will enlighten you.
I knew Hollywood often purchased film options to literary work but never actually produce a movie. Now I understand why they might do that. I also never knew that some in Tinsel Town even try to grab the income from your book!