As much as I enjoyed this book, I think I've complained about it to friends more than recommended it. It's also prompted me to ramble on to anyone who will listen about how genre is, essentially, a pact with the reader. I don't want to give anything away, but partway through this book, it changed genres in an unexpected (and unappreciated) way. Skimming through the reviews, I see I'm not alone in this feeling either. It would be like thinking you were reading a romance novel, but then everybody dies a gruesome death by end. Not great. 
 Still, by the time that genre change happened, I was invested enough in the book that I finished it. And, you can see above there: four stars. There really was a lot to like and even love. I do wonder whether the genre change was there to temper things, make it all a little more YA friendly, but who knows. Maybe if I'd gone into it less blindly and hadn't assumed it was a YA Dexter Morgan, I wouldn't have been so disappointed?