Maria Broom

When a witness who testified against D'Angelo Barksdale is discovered murdered, McNulty and the detail take the opportunity to link the killing to Avon Barksdale's drugs crew.

The brass begin to panic when Mayor Carcetti's master plan for the police department is leaked to the press. Meanwhile, McNulty shares some knowledge with Gutierrez and Marlo turns to proposition Joe with an enviable problem.

Tipped off by the Wire, Greggs, Herc, Carver and Freamon hit the projects and intercept a drug run. No sooner have the cops made a breakthrough than Barksdale's crew make a change in their tactics.

The case against Barksdale gets political when Greggs and Carver follow a money trail to a congressional aide. Meanwhile, Omar returns with a grudge against the Barksdale outfit.

Stringer Bell gets a lesson in construction management, Donette receives Brianna's blessing for hooking-up with Stringer, and Daniels keeps up the front of marriage to Marla, as she pursues a new career at City Hall.

A wave of urban reform brings down the notorious Franklin Terrace public housing towers, forcing the Barksdale drug crew to find a new home on the streets of west Baltimore.