I've been a big fan of George R. R. Martin's Game of Thrones for years. Good story and not easy to predict what's going to happen next. Why is that? Well, because he kills off everyone. Each time you think you know who the star of the story is going to be he kills them off. This picture I ran across gives you an idea of what he's like as an author.
Each of the book marks represents someone he has killed off in the story. And there are at least 2 more books to be published in the series.