S2, E12: In the Season Two finale, the Detail has a setback, and needs a new cooperator, while Russell and Bunk revisit Philly, looking for evidence. Brother Mouzone talks with Stringer Bell regarding their agreement, leaving Bell to contend with a dissatisfied Avon Barksdale. Bubbles and Johnny pull another caper and McNulty and Greggs return to the Westside, where they discover new connections. Herc and Carver feel disrespected by fellow officers, while Nick tries to come to terms with the Greeks--and himself. Omar and his crew have a new target and the Feds are less trustworthy than they seem.