I just finished Gone Girl and I don't want to throw the book across the room. It actually ended basically how I expected it to once I decided my first theories on how it would end were wrong. I think the ending isn't surprising at all though that could be because I had heard grumblings about it so Spoiler I knew it wouldn't end well. I suppose that's good in a way, not being surprised by the ending, but I also think it affected my enjoyment of the novel a bit because I spent most of the novel trying to figure out how it ended and I don't like doing that. I like to be surprised by endings (at least endings of mystery novels). Adding this down here instead of editing above because I'm on my phone. I think the ending wasn't surprising based on what happened when Spoiler Amy was at Desi's.