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".
Born Free (Dexter)
After finding a clue at Rudy's house, Dexter arrives at the house of his biological mother, Laura Moser. Flashbacks reveal that Rudy, whose real name is Brian Moser, is in fact Dexter's brother. He also witnessed the murder of their mother, but did not repress the memory; instead, he grew up in a mental institution and was treated for antisocial personality disorder. Dexter meets Brian in their childhood home, where he is keeping Debra. He intends to kill Debra with Dexter as a sort of "family reunion", but Dexter stops him. As Doakes and the police close in on the house, Brian escapes through a trap door and Dexter is left with Debra, appearing to have saved her.