A younger, less refined Dexter kills Mary by stabbing her after tying her to a table with plastic wrap, marking the birth of his signature ritual. Cast and Crew
Parallel to the main investigation, Dexter stalks , a teenager recently released from prison after killing a boy years earlier. Dexter believes Jeremy will kill again and nearly catches him in the act before intervening. Meanwhile, Rita faces harassment from a drug dealer associate of her imprisoned husband, Paul, who confiscates her car as payment for Paul's debts. The Flashback: Dexter's First Kill "Dexter" Popping Cherry(2006)
Nurse Mary (played by Denise Crosby ), who was caring for Dexter's sick adoptive father, Harry Morgan. A younger, less refined Dexter kills Mary by
Harry discovers Mary is administering overdoses to her patients and gives Dexter "permission" to make her his first target, provided he follows the "Code". Meanwhile, Rita faces harassment from a drug dealer