Dexter is an American television drama series. The series centers on Dexter Morgan (Michael C. Hall), a blood spatter pattern analyst for Miami Metro Police Department who also leads a secret life as a serial killer, hunting down criminals who have slipped through the cracks of the justice system. Set in Miami, the show's first season derived from the novel Darkly Dreaming Dexter (2004), the first of the Dexter series novels by Jeff Lindsay. It was adapted for television by screenwriter James Manos, Jr., who wrote the first episode. Subsequent seasons evolved independently of Lindsay's works.