SEASON 8. Dexter learns more about his dark origins from Dr. Evelyn Vogel, an old family friend, while helping her track down the Brain Surgeon, a new serial killer. Watch Dexter Season 4 Free Online. Full Episodes for Dexter Season 4. Show synopsis, episode guide, cast details, user reviews, message board, photograph gallery, videos, and production information. Watch Dexter Full Episodes Online. Instantly find any Dexter full episode available from all 8 seasons with videos, reviews, news and more! The next potential killer on Vogel's list is A.J. Yates, who was institutionalized at 15. Vogel tried to channel his hostilities much as she did with Dexter but was. SEASON 6. Dexter considers the nature of faith while stalking the Doomsday Killer (Colin Hanks), a vicious, deluded, religious fanatic who displays his victims in. Season 8 and the series conclude with Dexter facing impossible odds. With a hurricane threatening Miami, Dexter becomes determined to end things his way. Metacritic TV Reviews, Dexter - Season 4, Based on Jeff Lindsay's novels Darkly Dreaming Dexter and Dearly Devoted Dexter this crime thriller follows Dexter Morgan. On October 21, 2008, Showtime commissioned a fourth and fifth season of Dexter, each consisting of 12 episodes. The show's writers convened during February and March. Dexter is an American television drama that was broadcast on the premium cable channel Showtime from October 1, 2006 to September 22, 2013. A total of 96 episodes of.