I loved this book. I read it because I found out Alan Rickman would be playing the main character in a movie version. I ended up really liking the book and even the twist, but I think the ending stopped short. It seemed as though it needed to be more elaborate or at least explained with greater detail. I wanted more out of the main character but wasn't able to get it.
I don't know when the movie will be coming out or if it's even going into production anymore, but I would love to see how they adapt it to for the screen. Should make for good entertainment, even if the ending doesn't quite deliver.