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.
Novikov does not keep his end of the bargain, however, and threatens to expose Quinn unless he goes on the syndicate's payroll.
Soon afterward, Nadia tells Quinn that Novikov forced her to have sex with him.
The club's owner, George Novikov (Jason Gedrick), offers to give Nadia a passport and her freedom if Quinn disposes of blood evidence linking the head of the syndicate, Isaak Sirko (Ray Stevenson), to three murders; if he does not comply, Novikov will send her to a sex club in Dubai.
Quinn reluctantly disposes of the evidence and takes a bribe.
Debra calls him into her office to tell him they can never be together. When Miami Metro detective Mike Anderson (Billy Brown) is murdered by members of a Russian organized crime syndicate, Quinn goes with his new partner Angel Batista (David Zayas) to question the owners of one of the syndicate's strip clubs.
In season five, Quinn comes to suspect that Dexter murdered his wife Rita Bennett (Julie Benz) after learning that Rita shared a kiss with a neighbor, mixed with subtle differences in the modus operandi of the supposed killer, Arthur Mitchell (John Lithgow).
Unable to continue, Quinn hires private investigator Stan Liddy (Peter Weller) to investigate Dexter.
After a one-night stand with Debra, Quinn repeatedly tries to get her back into bed, eventually succeeding.
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.