Season 4
Episodes
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Lt. Barker recruits JC and Moreno to get the armored-car robber who killed Eddie and MacNamara.
Drop-Dead Gorgeous
Members of the unit target a modeling agent.
Pipeline
Agents interfere in an undercover operation aimed at a Colombian drug kingpin.
Spare Parts
Missing teens prompt a probe of a private hospital's organ-donor program.
Mob Street
The detectives go undercover on Wall Street to foil a stock-manipulation scheme.
Rat Trap
The unit probes mysterious fires in the garment district.
Quid Pro Quo
The detectives discover that the CIA is involved in a money-laundering scheme at a bank in a Cuban neighborhood.
Capital Punishment
A serial killer gives male victims tainted drugs.
The Unusual Suspects
Nell's ex husband comes back and ask's Nell for protection from the mob. Nina and J.C. become close.
Sign o' the Times
Lt. Barker gets involved in a bank robery. G cathes Nina and J.C. in bed together.
Going Native
Nina and Stone go undercover as owners of a garbage company. Nina and J.C. deal with their emotions of sleeping together and G catching them.
The Troubles
When a woman becomes a fugitive, Nina uses her only resource to help find her, her daughter. Stone's life becomes threatened.
Catharsis
A radical group kidnaps a child for bargaining purposes; Moreno gets even for the death of her husband and her partner when she meets Jordan in prison.