The department restructures precincts into specialty squads. Luger gets the 12th assigned as a homicide squad. A man murders his barber. A woman hires a hit man to kill her husband and then changes her mind.
Barney's frustration boils over when the new homicide-only edict results in the death of an old friend. Dietrich tracks down the hit man's intended target. Harris woos the precinct's crime photographer.
Wojo takes a personal interest in a fellow vet whose crime spree may be related to Agent Orange exposure during the Vietnam War. A domestic dispute occurs at the Brauer household when their apartment building becomes "clothing optional."
The precinct is besieged by a large group of prostitutes. Dorsey develops a protective stance with a young one. Harris receives stock tips from another. Dietrich is tempted by all of them as he experiments with celibacy.
The detectives are edgy because someone is sending specific information about them to Internal Affairs. Harris sets up a reunion between an elderly cat burglar and his wife who reported him missing years ago.