High Quality Content by WIKIPEDIA articles! Dexter is an American television drama broadcast on the premium cable channel Showtime since October 1, 2006. The series is based on characters created by Jeff Lindsay for his "Dexter" series of novels. The series follows the life of protagonist Dexter Morgan (Michael C. Hall), a Miami Metro Police Department blood pattern analyst with a double life. While investigating murders in the homicide division, Dexter hunts and kills murderers and criminals who have escaped the justice system. Although the first season is based on the events of Darkly Dreaming Dexter, the series` subsequent seasons do not follow the novels in the series. Departing from the narrative of Lindsay`s second Dexter novel Dearly Devoted Dexter, the show`s writer Daniel Cerone said that the writers "didn`t see the opportunity in the second book" to adapt it.