After I saw the first season on tv and fell hopelessly in love with it, a friend recommended I read the books. I bought this one first and was blown away by the way Jeff Lindsay writes. He really puts you right inside the mind of Dexter, the serial killer with a heart. Like a previous reviewer said, you can hear Michael C Hall's voice in your head as you read Dexter's story.
It's a thoroughly entertaining, if darkly humourous, read and I found it hard to make myself put it down. It's worthwhile to note that while the characters all translate superbly from page to screen, the essential plot points are quite different to that of the tv show (including an alternate ending).
I love this book/show and can't wait to find out what Dexter Morgan gets up to next!