"Darkly Dreaming Dexter" by Jeff Lindsay

Dexter Morgan is a serial killer with a code; his targets:  other serial killers.  

What is it about Dexter that makes him (almost) likable?

For information about the author and other books in the series, check out:

http://www.dexter-books.com/bios/jeff-lindsay

For an interesting article about the character of Dexter (in the books and in the Showtime series), check out:

http://www.rhombusmag.com/2011/02/09/tv-darkly-dreaming-dexter-why-we-root-for-a-serial-killer/