S. Robert Morgan

Bunk and Freamon chase their crime scene, a container ship, to Philly, where none of the crew finds it useful to speak English. Lt. Cedric Daniels--disgusted with his exile to the evidence control unit--lets it be known he's going to leave the department. On orders from Barksdale, Bell finds a way to set up the correctional officer, Tilghman, who's been harassing Wee-Bey. McNulty pursues the identity of the Jane Doe found floating in the harbor. A pair of young longshoremen--Frank Sobotka's son Ziggy and his nephew Nick--heist a container of digital cameras and sell them to men working for The Greek. After an ominous visit from his uncle, Avon Barksdale, D'Angelo agrees to stop getting high in prison, a wise move in more ways than one.

In the Season Two finale, the Detail has a setback, and needs a new cooperator, while Russell and Bunk revisit Philly, looking for evidence. Brother Mouzone talks with Stringer Bell regarding their agreement, leaving Bell to contend with a dissatisfied Avon Barksdale. Bubbles and Johnny pull another caper and McNulty and Greggs return to the Westside, where they discover new connections. Herc and Carver feel disrespected by fellow officers, while Nick tries to come to terms with the Greeks--and himself. Omar and his crew have a new target and the Feds are less trustworthy than they seem.

The Detail uses satellite technology to its advantage. Bodie is unhappy that Proposition Joe's people are slinging on his turf, but business flows--until a new face from New York arrives. Stringer Bell looks to an unlikely solution to the problem. A frustrated Valcheck visits the FBI in an attempt to get real results on the docks. Ziggy's deal with Double-G goes bad in a big way. Nick lies to Aimee, Greggs considers the idea of motherhood, and Prez makes a major blunder. The Detail prepares for an action that they hope will give them the man on top.

Herc discovers a blast from the past, which he belatedly reveals to his ex-colleagues. Daniels blows a gasket over the real reason the detail was reassigned. Stringer Bell learns from Donette that she's told Brianna about McNulty's visit. Bubbles makes a sales call and finds Johnny during the long, strange trip. Omar grapples with guilt as Butchie points out its pitfalls. Greggs stumbles into Cheryl, forcing them to confront the realities of their relationship. Carver announces a new tax initiative to help the unemployed. After a traffic stop turns bad, Colvin is forced to explain Amsterdam to members of the detail. Bunk receives a gift-wrapped surprise. Councilman Carcetti confronts Mayor Royce after learning that nothing's been done about the witness protection issue. McNulty tracks Terri to Washington, where he discovers the ups and downs of a long-distance relationship. Marlo dispatches a drive-by on a Barksdale corner from the calm of his pigeon coop.

Brother Mouzone returns to Baltimore on a mission of revenge and casts a wide net in his search for Omar, who has his own plan for vengeance. Colvin manages, for now, to put off a 'Sun' reporter inquiring about Amsterdam, while Burrell delivers news to City Hall, and the reaction is surprisingly mixed. Carver learns how much he doesn't know about good policing, while Pearlman and Daniels plead their case for a new kind of wiretap to Judge Daniel Phelan. Carcetti is about to launch his campaign, but struggles with its effect on his friendship with Council colleague Tony Gray. Stringer falls out of the loop with Avon and is given an ultimatum by Prop Joe and New Day Co-op crews. Cutty's initial approach to teaching boxing ends up alienating the corner boys, while Marlo raises the stakes against the Barksdale gang. Bubbles provides Freamon with entree into an undercover cell-phone hustle.

In the Season Four finale, the bodies from the vacants pile up while Burrell offers his support to Daniels and admonishes Rawls for crossing him. A distraught Bubbles finds himself at his wit's end after his revenge plan backfires. Proposition Joe looks to the Co-op to defray shipment losses, but finds them not so cooperative. Attempting to get Namond off the corners, Colvin visits Cutty in the hospital to arrange a prison sit-down with Wee-Bey about the boy's future. Omar divides the spoils from his latest heist, then hatches an audacious new plan. Carcetti responds to the governor's school-budget offer; Carver tries to buy time for Randy; Dukie has trouble adjusting to his new peers; Marlo gives Michael new responsibilities on an old corner; Colvin and Parenti take their proposal to City Hall; Namond returns to gen pop; and McNulty looks to pay back an old debt he owes Bodie.