Cary tries to stack the deck against Alicia during the trial of an Army reservist accused of murdering his wife. Meanwhile, Childs resorts to dirty tricks in an effort to ruin Peter's campaign.
Tipped off by the Wire, Greggs, Herc, Carver and Freamon hit the projects and intercept a drugs run. No sooner have the cops made a breakthrough than Barksdale's crew make a change in their tactics.
Cerreta is shot when his cover is blown during his investigation of a South American gun-smuggling operation.
Adams begins to write his memoirs while in retirement, corresponds with Jefferson after a series of personal tragedies, and lives to see his son John Quincy become president.
When an incident in the projects leaves a teenager injured and a gang member dead, Clark investigates; Arroyo threatens Clark.