Gregory L. Williams

McNulty and Prez turn up in the wrong alley, Cutty finds help, Bubbles is wired up, and Pearlman and Daniels confront a cell-phone company.

Avon readies his troops for a war against Marlo. Meanwhile, as the crew works towards the upper levels of the Barksdale organisation, McNulty has doubts about the path he's chosen for himself.

As McNulty and the detail continue to stake out Marlo's crew, newly-elected Mayor Carcetti is finding he is stuck between keeping his promises on education and his promises on law and order.

With election day approaching, the three mayoral candidates make last-minute appeals. Carcetti wrangles for votes as he responds to a potentially devastating smear, and Norris and Greggs get a lead on the Braddock case.

Marlo takes care of some unfinished business and strikes a deal with Avon Barksdale. Meanwhile, Mayor Carcetti's chief of staff blames Royce for the Campbell revelation.

Colvin tries to figure out a reasonable plan for Namond, who is living on the streets; Bubbles needs to rethink his strategy after it goes wrong; Burrell reprimands Rawls.