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".
Dexter Walker
Leah Patterson-Baker (Ada Nicodemou) asks Dexter to talk to her son VJ Patterson (Felix Dean) who is starting secondary school, about attending Summer Bay High. Dexter begins filming people with a video camera and is caught by Casey Braxton (Lincoln Younes) who is a member of a surfing gang named The River Boys. Dexter is kidnapped by two of the gang's members, who leave him in the forest. Dexter later returns home. Sometime afterwards Dexter and his group of friends go on a camping trip. Dexter is interested romantically in April but she is already dating Dexter's friend Xavier Austin (David Jones Roberts). Dexter takes Kate Hanlon (Mikayla Southgate) on the trip to make April jealous. April later begins a relationship with Dexter Behind Xavier's back. Xavier finds out about Dexter's relationship with April when he sees them kissing. Xavier is furious and punches Dexter in the nose. The two later become friends again. Dexter finds out that he has a sister, Sasha Bezmel (Demi Harman). Shortly afterwards Dexter sees naked pictures of Sasha around school and is furious.Dexter and April plan to sleep with each other after the upcoming year 12 formal. Dexter attends the year 12 formal. Dallas Phillips (Emma Griffin) kisses Dexter just as April enters. April later ends their relationship. Dexter becomes a nurse at Summer Bay Hospital. His first patient is Dallas's son William (Daniel Place). Dexter finds out that Dallas is living in her car and gets her a job at the Gelato Bar. Dexter is jealous when April begins to date Heath Braxton (Dan Ewing). Dexter and the rest of the Walker family discover that Sasha has been assaulted repeatedly by her boyfriend Stu Henderson (Brenton Thwaites). Dexter and Xavier look for Stu with the intention of confronting him but he has disappeared. Stu is later found dead.