Mystified by Omar's disappearance, Marlo and Chris ramp up their efforts to locate their nemesis. After attending a sparsely attended waterfront ceremony, Carcetti fires away at a larger press event--and recasts himself as a champion for the homeless. Bunk revisits some old leads in the rowhouse cases, but is frustrated in his attempts to get bloodwork from the crime lab. Templeton looks for a perfect follow-up to his latest, nationally covered story, which has replaced the city's educational crisis on the paper's priority list. After the detail gets more manpower, Freamon presses McNulty to get new surveillance equipment, but the resources aren't as deep as both hoped. Pearlman discovers new clues pointing to corruption in City Hall; Marlo makes new appointments at the latest co-op meeting; McNulty takes a peculiar interest in a homeless man.