Showtime’s Dexter is the story of a serial killer who is a vigilante that follows a Code of Harry-his adopted father. Dexter exercises his demons and kills someone by slicing and dicing them, but only if they are bad men. He is a hero, or is he a villain? The fact of the matter is that most of us would skip that whole due process business if we could. Showtime’s Dexter is always sure that he is killing a bad guy, seeing as he works for the Police as a forensic scientist. This is a damn good show.The series is…