Hall starred in and co-produced the Showtime television series "Dexter", in which he played a psychopathic blood-spatter analyst for the Miami Metro Police Department, who moonlights as a serial killer / vigilante. Jennifer Carpenter played his adoptive sister, Debra Morgan. The series premiered on October 1, 2006, and ended its run in 2013. After months of rumors, on April 18, 2013, Showtime announced via social media that season eight would be "Dexter"s final season. Hall also voiced Dexter Morgan in the animated web series "".