Sergeant Jay Landsman observes the informant's arrival; when he remarks on their progress, Greggs angrily reminds him that their investigation has been slowed by political interference.
Later, Freamon discusses the case with Greggs and convinces her to interview their main suspect Wardell — the man that Braddock was set to witness against.
Back at headquarters, Bunk tries to convince Detectives Crutchfield and Vernon Holley to reopen Omar's case based on his claims of innocence.
Greggs reviews the Braddock case and picks out a detail: no one in the canvas noticed the gunshot.
This prompts her to revisit the scene of the shooting, where she identifies a ricochet that she traces back down the alley to other signs of gunfire, eventually finding broken bottles outside a backyard.
Greggs later tells Norris she has solved the case and shows him the murder weapon pulled out of the house.
Tony tells him a story of being forced to "eat shit" from the various constituent interests of the city, a pattern that continued throughout his term and eventually led him to forgo standing for re-election.
Carcetti and Norman Wilson have an amicable meeting with Mayor Clarence Royce and his Chief of Staff Coleman Parker.
Thinking she will likely be replaced by an African American attorney, she is surprised when he offers her the Violent Crimes Unit post.
Western District commander Cedric Daniels attends a COMSTAT meeting chaired by commissioner Ervin Burrell and his deputy William Rawls.
Daniels tells them of his strategy of putting two-man cars on the worst drug corners while devoting his resources as much as possible to pursuing good felony cases.
Carcetti meets with Wilson, State Delegate Watkins and Gerry to discuss their first move in office.
Major Cantrell is surprised when he declines to travel with shift lieutenant Grayson, but impressed that Carcetti is interested in understanding the day-to-day of the district.
Sergeant Thomas "Herc" Hauk and Detective Leander Sydnor realise that the surveillance camera has been stolen.
Dennis "Cutty" Wise finally tracks his absentee welterweight Spider down and finds him selling drugs on a corner with Jamal.
Prez takes Duquan "Dukie" Weems with him to the store room and raids the board game boxes for dice.
After school Michael visits Namond Brice, who has set himself up as a crew chief selling drugs at his mother's urging.
The rival crew chief tells his dealers, who include Sherrod and Shaun Williams, to follow Namond when he leaves and give him a beating.
Assistant Principal Marcia Donnelly visits Prez's math class to update him about a rape allegation made by a female student, Tiff.
She has admitted that she had consensual sex with two boys, thus clearing them of any law-breaking and allowing Randy Wagstaff to return to school after being suspended for acting as a lookout for the others.
When Donnelly leaves Prez begins to teach; he has set up a computer for a special class project and has the new textbooks for his students.
Namond attends his separate class, part of a University of Maryland-funded investigation targeting prevention of repeat violent offender behavior at the school level.
Cutty visits the school to meet with Donnelly about her program to secure funding by having him round up truant children for a day in September and October.
Namond is removed from class again and refuses to talk to Colvin or the specialist teacher, instead swearing every time he is spoken to.
Randy has missed earlier lessons so his bets are less informed than Michael's, but he learns quickly when he loses a round.
In the second scene, over the radio at Bubbles', a columnist can be heard describing his job as reminiscent to the one of David Simon.
This ties into the golden rule Bunk mentions to Omar, who is facing retribution from many of his former victims in prison.