Debra Morgan is a fictional character from the television series Dexter, which originally aired on Showtime. She is portrayed by actress Jennifer Carpenter and serves as a detective with the Miami Metro Police Department. Debra is known for her strong personality, dedication to her job, and complex relationship with her brother, Dexter Morgan, who leads a double life as a vigilante serial killer. Throughout the series, Debra grapples with her own moral dilemmas and the challenges of law enforcement. Her character development is central to the show's narrative, as she navigates personal and professional conflicts while uncovering the truth about her brother's secret life.