Omar returns from his self-imposed exile and begins to plot revenge for the murder of a former associate; Gus bemoans the lack of a city-court reporter when the Sun misses out on a grand-jury probe; Carcetti's desire to get rid of Burrell comes with strings attached; Freamon contacts an old partner for help with McNulty's investigation of the deaths of homeless men; Marlo has an eye on the future in his dealings with the Greeks.