It's based on a book
called, I think, "Darkly Dreaming Dexter", which I see has been re-issued to coincide with the new series, complete with a new cover showing Michael C. Hall.
[link|http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?z=y&EAN=9780307277886&itm=3|Here's the Barnes and Noble link.]
Tom Sinclair
"This is a lovely party," said the Bursar to a chair, "I wish I was here."
-- The Bursar is a man under a *lot* of stress
(Terry Pratchett, Lords and Ladies)