Mackey is a homicide detective for the Baltimore Police Department.


Season 2

He, alongside partner Ray Cole, assisted Detectives Moreland and Freamon in serving grand jury subpoenas at the Port of Baltimore. ("Undertow")



Season 2
"Ebb Tide" "Collateral Damage" "Hot Shots" "Hard Cases" "Undertow" *
"All Prologue" "Backwash" "Duck and Cover" "Stray Rounds" "Storm Warnings"
"Bad Dreams" "Port in a Storm"

*Uncredited appearance.

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