 After the discovery of another victim of the Ice Truck Killer at an ice rink, the missing guard, Tony Tucci, becomes a potential suspect.Meanwhile, Rita receives an unpleasant visit from her ex-husband's drug dealer, who confiscates her car, forcing her to take the bus to and from her job as a hotel receptionist.Dexter selects his next murder victim while having flashbacks of his first killing—a nurse (Denise Crosby) who was caring for Dexter's sick father, Harry Morgan, but was administering overdoses of medication too and slowly killing her patients.