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
After consulting with forensics technician Vince Masuka (C. S. Lee), however, Debra deduces that Trinity could not have been the shooter. During a Thanksgiving dinner with Dexter's family, Debra remembers a conversation she had with reporter Christine Hill (Courtney Ford), and realizes Hill has knowledge of the shooting that no one outside the police department knew about, and concludes that she was the shooter. This is proven true in a later episode revealing that Hill is Trinity's daughter. Hill confesses to Debra that she killed Lundy, moments before she commits suicide. Debra then renews her search for Harry's mistress, and finds out about Laura Moser, and the fact that Dexter and the Ice Truck Killer are brothers. She tells Dexter the news (which he already knew), and then tells him that he is "the one consistently good thing" in her life.