The episode was written by Rafael Alvarez from a story by David Simon and Ed Burns and was directed by Joe Chappelle.
Herc, Carver, Sydnor and Greggs make a labored arrest of the package carrier, but let Stinkum get away so as to not compromise the wiretap.
Phelan is surprised that Daniels stood up for the wiretaps, and worries that McNulty no longer trusts him since the Gant murder hit the newspapers.
Rawls gives Santangelo an ultimatum: if he wishes to remain in Homicide, he must either clear at least one of his unsolved cases by day's end or inform on McNulty.
They canvass the buildings opposite the crime scene looking for witnesses and find an older woman who corroborates Omar's story and is willing to testify.
In the pit, Bodie quizzes Poot about Wallace, who has holed up in his squat and started taking drugs since Brandon's murder.
As the wiretaps are killed by the payphone removal, "One Arrest"—that of Kevin Johnston, the runner—is also the sum total of progress the unit made from information gathered from the wire.
It also refers to the codes that the law and the street also follow, such as that there should be no talking on phones about business which Stinkum breaks resulting in being berated by Stringer.
This episode marks the first appearance of Senator Clay Davis and his aide Damien Price, establishing the first link to the political plotline that will become prominent in seasons 3–5.