Hogan announces the station will be closed and the personnel reassigned.
Elaine reluctantly participates in the manhunt for a serial killer who targets city women.
Marie's mother falls victim to brutal skinheads who prey on senior citizens.
Giambone is implicated in the murder of a former police-training classmate.
O'Brien and Giambone must prevent the assassination of a prosecutor in a mob investigation.
O'Brien seeks the reason for a girl's suicide after being unable to prevent it.
The prime suspect of a failed jewel heist brings charges against Giambone; O'Brien nurses an injury.
O'Brien and Giambone investigate the murder of a health club co-owner and confront a powerful loan shark.
Giambone and O'Brien help a jazz musician whose contemporaries are being killed one by one.
The husband of a murder witness jeopardizes them both when he goes to police as the witness.
Real-estate partners are at the mercy of a homicidal maniac when a gentrification scam swindles many.
Investigating the hit-and-run death of a young woman, O'Brien and Giambone find an unexpected ally in a priest (Huntz Hall).
A Colombian detective with unorthodox methods helps Mid South bust a cocaine ring.
When three sisters cannot accept a fourth's death, O'Brien and Giambone feel a substantial inheritance may be the reason.
O'Brien and Giambone investigate a possible link between an illegal immigration and the murder of a refugee aide.
When a robbery investigation results in Colby's shooting, Carson holds himself responsible.
A girl confesses to witnessing her brother's crime and jeopardizes the life of her priest (Tony DeSantis).
When Hogan is shot, O'Brien and Giambone must rally behind the unfamiliar lead of a beautiful temporary commander to catch the assailants.
O'Brien wrestles personal demons through a tough extortion case and Nicole's pregnancy.
A teenage couple must stay one step ahead of the mob after witnessing a night watchman's murder.
Vociferous animal-rights activists raid a research laboratory and steal monkeys to use in a propaganda campaign.
When a suitor goes berserk and kills Nicole's barroom attacker, she hides the details from O'Brien.
Giambone and O'Brien are assigned to investigate several murders after Kirkwood's friend gets involved with the Chinese underworld.
Giambone and O'Brien trace a rumor that a mobster has contracted the murder of the deputy mayor.
O'Brien and Giambone enter a small drug war when a dealer posing as an ice cream vendor is murdered.
Kirkwood's old friend, a presumed-dead rebel leader in South America, wants everyone to know he is alive.
When a mobster decides to testify against his boss, O'Brien and Giambone grudgingly agree to protect the informant.
O'Brien and Giambone uncover drug smuggling while investigating murder at a senior citizens' home.
A young astronomer sees a homicide through her telescope, but her frightened mother will not let her testify.
A young victim connects a series of rape/murders and her attacker's recent release from prison.
O'Brien and Giambone enter the world of child pornography while seeking a runaway whose father was killed searching for her.
Overzealousness endangers a TV reporter's life when she covers the activities of a crime family.
Sympathy for the man's family makes Giambone reject suicide as the cause of a failing industrialist's death.
Whitey's cousin becomes a suspect after his limousine is connected with a string of murders.
The detectives investigate the slaying of a pimp, apparently by a prostitute's father.
O'Brien and Giambone seek the cooperation of a frightened singer (Danny Aiello) blackmailed by the mob.
O'Brien and Giambone must cut through neighbors' lack of cooperation to solve a girl's murder.
The reappearance of his first partner's killer rekindles O'Brien's memories and renews his determination to capture the man.
A member of Giambone's youth-basketball team is implicated in a gang murder; guest Hector Elizondo.
An abused wife (Carol Lynley) comes to Kirkwood for help; O'Brien and Giambone search for a pimp's killer.
O'Brien suspects a fellow detective of helping drug dealers after a major stakeout is ruined.
A woman's mysterious death sends O'Brien and Giambone to investigate her adopted child's birth mother.
While Lt. Hogan is being interviewed on a radio call-in show, a murderer calls in a challenge.
The death of a young model leads O'Brien, Giambone and Kirkwood to a top model embroiled in blackmail.
An unbalanced woman from O'Brien's past makes an attempt on his life and injures Nicole in the process.
O'Brien and Giambone investigate the death of a star college hockey player who had ties to a gambling ring.
O'Brien and Giambone attempt to clear two fellow officers framed in several murders.
O'Brien, Giambone and Kirkwood investigate the murders of the trainer and jockey of a prize racehorse.
O'Brien risks his career and his relationship with Nicole when he becomes entangled with a murder suspect.
Investigation of an illegal alien's death propels O'Brien and Giambone into the politics of a Caribbean nation.
O'Brien and Giambone investigate the disappearance of a former co-worker.
O'Brien and Giambone investigate the slaying of a fashion designer's assistant.
O'Brien and Giambone are torn between duty and justice while investigating the stabbing death of a fascist group's leader.
O'Brien and Giambone set out to find the motive behind the bombing death of a young wife.
The police and a vigilante group clash while investigating the slaying of an elderly man.
A pretty museum curator helps investigate an art theft that occurs when a mystery man causes a disturbance.
Kirkwood poses as a derelict at a homeless shelter where a strangler selects victims.
Sexually abused in prison, a young ex-convict targets homosexuals.
A runaway girl witnesses a deal between a crooked union boss and a special prosecutor.
O'Brien takes mugging victim Nicole to his apartment, unaware that her assailants have found his address in her purse.
The killing of an innocent bar patron instead of an undercover narcotics agent exposes a web of double dealing.
Giambone and O'Brien follow a cat burglar whose theft of a call girl's diary worries several city officials.
O'Brien and Giambone investigate the shooting of teenagers who took a joy ride in a terrorist's car filled with weapons.
O'Brien regrets surrendering a psychopath to the justice system when several more murders occur.
Giambone joins professional boxing to expose drug dealers who caused a fighter's death.
Stevie's involvement with a married, mob-linked restaurateur interferes with her police duties.
The investigation of a sailor's death leads to a stowaway, who may be an escaped felon.
Giambone believes someone with a score to settle shot a veteran officer during a routine domestic-violence call.
Former partners Hogan and O'Brien investigate a murder and a map connected to a 7-year-old robbery.
A halfway-house resident with a violent past appears to have murdered a young mother.
An unfaithful wife and a seedy detective lead Giambone and O'Brien to the killer of a suspected embezzler.
A citizen requests a heroic act be kept secret in order to hide a violent past.
The longtime president of the cargo-handlers' union emerges as the prime suspect in his challenger's murder.
Colby concludes his brother was the sole survivor of the massacre of five people during a diamond heist.
Officials pressure Giambone and O'Brien to prove a troubled man caused the disappearance of two children.
Kirkwood resorts to drinking when a young reporter's widow blames him for her husband's murder.
An insurance investigator helps O'Brien search for a stolen songbird statue worth more than $1 million.
An unscrupulous photographer complicates an assignment to protect an actress making a comeback.
A real murder results when a group of teenage boys stockpiles arms for war games in the park.
A clever plot unfolds after Kirkwood witnesses the murder of a shipping-plant guard.
Giambone's grandmother refuses to budge from the station house until police look for her friend.
When a poor loser kills other high-stakes poker players, a victim's gangster father wants revenge.
The detectives investigate a building owner who has been accused of arson even though he had no insurance and his son was a victim.
O'Brien searches for the drug-dealer who stole his gun and killed a patrolman with it.
Giambone and O'Brien question overwhelming evidence against a man arrested for killing his father and sister.
O'Brien and Giambone search for a prostitute who plans grisly deaths for her clients.
Giambone and O'Brien's investigation of a suicide leads to a top-secret intelligence operation.
Giambone rekindles a romance with his high-school sweetheart, then learns of her involvement in a drug ring.
O'Brien does not believe a man who confesses to murdering the key witness in a gun-smuggling case.
The Midtown South Police Station goes on alert when two killers threaten to blow up the precinct.
A photographer (Matsu Anderson) refuses to deliver photographs of two homicides unless O'Brien and Giambone can guarantee her safety.
The detectives track a weapons dealer who sold machine guns used in a liquor store holdup.
A panicked city awaits the arrest of a serial murderer, while a prime suspect's cooperation puzzles O'Brien and Giambone.
O'Brien and Giambone try to convince a politician's assistant to testify in order to prevent the release of a suspected rapist.
Giambone must appear before a grand jury after Internal Affairs investigates the shooting of a young thug.
A journalist records the activities of two night-shift detectives as they search for the killers of four fellow police officers.