DEXTER (Showtime) Season 5 Trailer July 25, 2010 Dexter, News Check out the new season 5 trailer for Showtime’s DEXTER which was shown to audiences at Comic Con 2010. The new season of Dexter premieres on Sunday, September 26th at 9:00 PM ET/PT on Showtime. Dexter Synopsis: The Showtime Original Series Dexter ended Season Four with a huge dramatic twist. In this Season, America’s favorite serial killer had gone from freewheeling bachelor to responsible husband and doting dad. Maintaining an average-guy facade while satisfying his need to kill had never been easy. But now, with wife and kids in tow, Dexter had more to lose then ever, as he was drawn into a deadly game with a killer every bit as dangerous — and conflicted — as he is. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)