Jennifer Carpenter plays the very important role of Debra Morgan on the hit television series Dexter on HBO. Debra is a reserved yet outspoken individual who finds comfort in her one and only brother Dexter. She is a force to be reckoned with in uniform but an emotional wreck outside of work with her personal life.
Quick Bio from Wikipedia:
Debra was born to Doris Morgan and Harry Morgan and later became foster sister to Dexter Morgan. A tough, foul-mouthed tomboy, she craved her father’s attention, and envied Dexter for all the time that Harry spent with him — unaware that Harry was teaching him how to get away with murder.
When she was 16, her mother died of cancer. From then on, she wanted to become a detective like her father, and started learning to shoot a gun by taking her father’s. Dexter found out and told Harry, who punished her. Hurt, Debra told Dexter that she wished that Harry had never brought him home; she was immediately remorseful for saying it, however, and apologized.
She was distraught at her father’s death and, inspired by his legendary police career, she followed in his footsteps and joined the police and yearned desperately to become a Homicide Detective. She spent three years in patrol and then another two years in vice before being promoted by Captain Tom Matthews (a friend of her father), becoming a Homicide officer at the start of the first season.