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However, after Dexter sees Quinn taking money from a crime scene, he tries to shut him up by buying him expensive football tickets.
Meanwhile, Quinn starts a relationship with Christine Hill (Courtney Ford), a reporter who flirtatiously grills him for information on his cases.
He begins drinking heavily and having random one-night stands, once turning up to Debra's housewarming with a girl he flippantly refers to as "chick from bar", and hitting on Batista's sister Jamie (Aimee Garcia).
His womanizing also affects his work when he endangers the investigation of suspected "Doomsday Killer" Professor Gellar (Edward James Olmos) by sleeping with his assistant, an important material witness.
Though more careful about what he says around her, Quinn still defends Hill when Dexter tells her to leave Debra alone, as Hill wanted to do a piece on her about a shooting she was involved in.
After a one-night stand with Debra, Quinn repeatedly tries to get her back into bed, eventually succeeding.
Joseph "Joey" Quinn is a fictional character in the Showtime television series Dexter, portrayed by Desmond Harrington.
Quinn is a cop who transferred to the Homicide division after being in narcotics before season three.
Nonetheless, Quinn tells Hill about numerous police reports (supposedly "off the record"), and she uses this information to report that FBI agent Frank Lundy (Keith Carradine) has returned to Miami.
Quinn breaks up with Hill after she publishes the article about Lundy, but the two soon get back together.