It was pretty good. Kind of a sad ending. It does kind of drag at a few points, but never enough to give up on. Throughout the novel there's lots of talk about figuring out this huge mystery, and it does get quite frustrating because we're forced to be as oblivious as Abbey. May not be the best in the series, but it does answer everything, and leaves the reader thinking. It was a great way to end the series, even if it was a bit sad.