a repeat drunk driver, who has killed and crippled several people, yet shows no remorse or guilt for his crimes, the people he has killed and severely injured while driving drunk, and the horrible way his actions effected all those who loved his victims. Whenever he kills or injures someone in a drunk driving, he changes his name and moves to a new city. Dexter kills him in an abandoned liquor store. Sean (Richard Gunn) is a mechanic and temporary boyfriend of Debra's. Dexter and Rita double dated with them and Debra got on well with him, but later he turned out to be married and after Debra found out that he was using her as a bit on the side, she dumped him. He plays a part in making Dexter's relationship with Rita uncomfortable as she notes that they get on well with each other and that she and Dexter do not have the same fluency in their relationship. Shanda (Lizette Carrión) became friends with Debra during Deb's undercover work as a prostitute. Shanda, being street prostitute herself, became a helpful resource in the Miami Metro PD's hunt for the Ice Truck Killer. Jeremy Downs (Mark L. Young) is a 19-year-old boy living in a halfway house after he is released from juvenile hall. At the age of fifteen, he was convicted for killing another boy. Dexter attempts to kill him, but lets him go after finding out that his victim raped him. Before leaving he encourages Jeremy to only kill those who deserve to die. After Jeremy killed a second innocent boy Doakes arrests Jeremy. While he is detained, Dexter talks to Jeremy who revealed to Dexter that the trauma from the rape has left him just like Dexter, "empty", and he kills to feel something—although he does admit that it does not help, and in fact makes the feeling worse. Dexter later visits Jeremy in prison, as he is the only one who can understand him, and vice versa, but finds Jeremy had killed himself. Nurse Mary (Denise Crosby) is Dexter's first victim, as seen in flashback. She was nurse who overmedicates her patients with morphine who will eventually die from overdose. Dexter incapacitates her with a syringe which is where he obtained his syringe technique. She believes that she is helping her victims by "ending their pain", and keeps an album containing their obituaries. Harry Morgan