I think what made me disappointed in this book was that I kept reading it hoping it would be more like the Dexter book series, but it never reached that level. Yes, it is a teen book, but that didn't stop it from becoming grisly and detailed with forensic facts and criminal psychology. It really had some interesting facts and seemed well researched. But the main character never grew on me, nor did he "hunt killers" (until it is mentioned on the last pages as a setup for the sequel). Dexter he is not. An angsty, troubled, teen with a murderous dad he is.