OK, I have something that wasn't in the books and has already happened on the show, but that I'm unsure of how to interpret. Would discussion of that fit this thread?
ETA: OK, it's when Ramsay Snow is having sex with the girl who helped him hunt down and kill the other girl. Then, Theon's sister arrives to break him out. Ramsay shows up at the dungeon all bloody and in a great mood. I'm wondering if we're just supposed to assume rough sex, or if he killed the girl during sex and that's why he's so happy. I know when I saw her helping him hunt, I thought, "He's bound to turn on her and hunt her soon." (Not a spoiler, not in the books.)