Michael C. Hall's Dexter has managed to get out of some tight spots before but he will face his toughest test yet when Debra discovers the truth of who he really is.
The two-minute extended season seven trailer is packed full of teases of what to expect including connections to past seasons with the Bay Harbor Butcher and the Ice Truck Killer, Debra's dilemma in turning in her brother and Dexter's frustration.
"I will never be OK," Debra tells Dexter, after discovering her brother is a killer.
At the panel earlier this event, Jennifer Carpenter said the confrontation scene that begins the season premiere is "sort of perfect".
'Dexter' returns Sunday, September 30 at 9 PM on Showtime.