"Conscience do cost." -- Butchie Herc discovers a blast from the past, which he belatedly reveals to his ex-colleagues. Daniels blows a gasket over the real reason the detail was reassigned from an investigation in Pimlico to the Western District. Stringer Bell learns from Donette that she's told Brianna about McNulty's visit and that Brianna is likely to talk to him.

• David Simon
• Dennis Lehane
• Richard Price

• Delaney Williams
• Julito McCullum
• Robert Wisdom