Julito McCullum

Danny and Baez search for teenagers who randomly punch unsuspecting people in the head.

Elizabeth attempts to lift the Cuban trade embargo. Meanwhile, Alison and Henry both while in Havana.

Four West Baltimore boys wrestle with what to do with the rest of their summer vacation as the new school year approaches.

Herc's job with the mayor takes a hard turn; Prez prepares for his first day as a teacher; Carcetti drops a bombshell on the mayor during a televised debate.

Valchek leaks details of a case to Carcetti; Royce turns against Burrell; Chris tries to enlist Michael into Marlo's ranks.

Freamon and Greggs move to the homicide unit; Cutty gets a job at Tilghman school; Bubbles gives Sherrod an ultimatum to get back in school.