McNulty plays a spy game with his sons at the market, having them follow Stringer Bell.

McNulty's sons continue following Stringer Bell and write down his license plate.

Wallace helps a young charge with math homework using drug trade examples.

McNulty loses track of his sons and has them paged over the PA system.

The detail discusses wiretap results and pay phone usage.

Herc and Carver discuss the sergeant's exam and Prez asks them to follow pit crew.

Omar is brought in for questioning and spots a photo linking Avon to Orlando's club.

McNulty tells Bunk about his sons tracking Stringer Bell's car.

Wallace helps a young charge with math using drug trade examples.

Poot pressures Wallace to come to work, but Wallace refuses.

Wallace helps a young charge with a drug-related counting problem.

Poot tells Wallace that Dee wants to see him.

The detail discusses surveillance and Stinkum's promotion party.

Daniels decides to keep the cash found in Price's car and writes a receipt.

Burrell orders Daniels to shut down the case and return the money.

Daniels confronts Burrell about shutting down the case and discusses chain-of-command.

D'Angelo finds Keisha dead; the detail learns the wiretap is being shut down.

Judge Phelan calls Burrell and threatens contempt if the wiretap is shut down early.

Stringer attends an economics class and later berates print shop staff.

The Barksdale organization reacts to Stinkum's death and Wee-Bey's wounding by Omar.

Omar is interrogated about Stinkum's murder and discusses the rules of the game.