I'm always reading something, usually multiple books at a time.
For a while I was on the verge of giving this one three stars, but my opinion of the book deteriorated within the last quarter-third or so of the narrative. I wonder if I would have liked this book more if I'd read it before having watched seasons one through seven of the Showtime TV series based on these books, but I couldn't help comparing them as I read. One review I'd seen for this book mentioned that reading it was like reading season one of the series. It kind of was, at least for a while. But ultimately, I ended up feeling that show's writers and producers have infinitely improved upon their source material. To me, the TV version of Dexter has much more depth. The main mystery that this book deals with, I think, unfolded in a much more interesting way on the show.
I can't help making some more comparisons, and I will hide them behind "spoiler" tags, as my discussion will contain spoilers for both season one of Dexter as well as this book.
Something else that bothered me throughout the book was Dexter's constantly referring to Harry as his "foster father," even after revealing that Harry had legally adopted him. I could maybe see him using "adoptive father," but "foster father" just wasn't even accurate. And on a much more petty note, I will say that I got tired of Dexter's insistence on setting up alliterative phrases involving his name (see title; I know all of the books have D-alliterations with Dexter, but I had no idea that Dexter-as-narrator does this all the time as well).