Who plays Joey Quinn in the Dexter franchise?

Desmond Harrington plays Joey Quinn in the Dexter franchise. Quinn is a Miami Metro detective who first appears in the third season, initially transferring from the narcotics division to homicide and becoming Debra Morgan’s partner.

Harrington joined the original series after its first two seasons and remained part of the cast through season eight. His performance presents Quinn as capable but morally compromised, with storylines involving Internal Affairs, confidential informants, corruption investigations, and his complicated relationship with Debra.

A common mix-up is confusing the actor with other prominent Miami Metro cast members. David Zayas plays Angel Batista, Geoff Pierson plays Tom Matthews, and James Remar plays Harry Morgan. Harrington’s Quinn is also distinct from Joseph Quinn, the similarly named actor associated with other productions.

Harrington later returned as Quinn in Dexter: Resurrection, making the answer apply to the broader franchise rather than only the original series.