From an early age Dexter knew he was different, so did his foster father (a police officer), believing that he couldn't fight his "dark passenger" Dexter decides that he should put his compulsion and only kill those that truely deserve it.
Problem is there's someone out there that knows and want's to play with him.
OK the ending was rather ropey and not altogther unexpected. His sister got on my nerves and I just wanted to slap his drippy girlfriend. But Dexter is a curious creature and I'm intrigued to see where he goes from here.
I really couldn't get on with the TV spin off but the books do have something about them.