New Department regulations force the squad to specialize in homicides. New cases include a man who murdered his barber, a series of dismembered bodies and a woman who's put a hit out on her husband.

The guys look for the man whose wife has made him a target for murder and the precinct gets a new photographer, but the squad's new specialization has sad and fatal consequences.

A vagrant claims to be from the 1976 Democratic National Convention, while Harris deals with a series of thefts and a new officer may be too good to be true.

The squad deals with an epidemic of heroin, a smoker doesn't take breaking the habit very well and a new detective who thinks the detectives are on the take asks to be left out. (Note: First of three appearances of Det. Dorsey.)

Being a veteran of the Vietnam War, Wojo investigates the effects of Agent Orange on an arrested robber who is also a former Vietnam vet, while Mrs. Brauer wants her husband arrested for being naked all the time. (Note: Second of three appearances of Det. Dorsey.)

Dorsey becomes overprotective of a 15-year-old hooker, while Dietrich tries the "new celibacy", Barney fields calls from powerful men concerned about a high-end escort's "little black book" and Harris gets stock tips from an unlikely source. (Note: Third and final appearance of Det. Dorsey.)

Dietrich resigns after he shoots a young suspect during a holdup.

A memo from Internal Affairs suggests that one of the detectives is a spy, while a veteran criminal is dying of cancer.

Harris creates an erotic film as part of an undercover assignment, while Wojo is accused of molesting a male suspect and the battle between radio and TV takes on a whole new meaning.

Luger is just in time to see Harris' erotic film...will the results be worth it?

A psychic stops a purse snatcher from committing his crime, while a linguist tears down a grammatically incorrect poster.

On a stormy night, Harris is sick, Levitt tries to communicate with a deaf woman and Wojo goes missing in the Hudson River while chasing a suspect.

The detectives deal with a gun-toting librarian and a store owner has his store vandalized by a gypsy who claims the owner is a Nazi war criminal.

Barney's daughter makes plans to go out with Wojo, much to Barney's surprise... and concern, while the portrayal of a character in Harris' novel gets him sued for libel.

Barney refuses to reveal his sources in a drug-bust case.

Harris takes over the squadroom while Barney is held in contempt of court.

A woman's doll - worth $5,000 - is stolen, while a man buys a ticket to take the Space Shuttle to the Moon.

Fish stops by the station where two fighting chess players are brought in, a woman blames radioactive waste for her husband's impotence and Harris' libel case is decided.

A group of Orthodox Jews complain about the precinct's slow responses to emergencies and Luger makes matters worse, while a survivalist couple sets up housekeeping in the sewers.

As the precinct receives new bulletproof vests, an inventor thinks someone's trying to rip him off and Luger wants biographies of his fellow detectives.

A rainmaker hired by the city builds a bonfire due to a drought, while the detectives consider a job opening in Vice.

A newspaper vendor is charged with petty trespassing, while Harris must deal with the consequences of his lost libel suit.