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".
Jaime Murray
Relocating to Los Angeles, Murray starred in "Dexter" as Lila Tourney, Dexter Morgan's Narcotics Anonymous sponsor and the main antagonist in Season 2. Dexter spends one night in a hotel with Lila without any sexual contact, the revelation of which leads to his break-up with his girlfriend Rita Bennett. Lila and Dexter have a brief relationship, but he eventually comes to believe that Lila is in fact a sociopath who hangs out in support groups in an attempt to vicariously experience emotions in a safe environment, by closely observing them in recovering addicts. She becomes obsessed with Dexter, believing that she sees through Dexter's "mask", and he is her soulmate.