Jennifer Carpenter
Jennifer Leann Carpenter (born December 7, 1979) is an American actress. She is known for playing Debra Morgan, the adoptive sister of the title character of the Showtime series "Dexter", for which she earned a Saturn Award in 2009, and also for playing Rebecca Harris in the CBS television series "Limitless".
Debra Morgan
She starts dating, and eventually falls in love with, Rudy Cooper (Christian Camargo); unbeknownst to her, he is actually the Ice Truck Killer, and is only dating her in order to get close to Dexter. At the end of the season, Rudy proposes to her and she accepts. Rudy — who is actually Brian Moser, Dexter's biological brother — then kidnaps her to reveal himself to Dexter. He binds her to a table in the same manner that Dexter kills his victims, while Dexter and Brian discuss her fate. Dexter ultimately saves her life, and reluctantly kills Brian to keep her safe.