O'Brien, Giambone and Kirkwood investigate the murders of the trainer and jockey of a prize racehorse.

Colby and Carson are the subject of a department investigation. Guest star: Leslie Toth. With Scott Hylands and Jeff Wincott.

O'Brien and Giambone investigate the death of a star college hockey player who had ties to a gambling ring.

An unbalanced woman from O'Brien's past makes an attempt on his life and injures Nicole in the process.

The death of a young model leads O'Brien, Giambone and Kirkwood to a top model embroiled in blackmail.

During a radio interview, Hogan (Sean McCann) is challenged by a murderer he previously arrested. Guest stars: Alan Scarfe and Frank Moore. With Scott Hylands and Jeff Wincott.

The reappearance of his first partner's killer rekindles O'Brien's memories and renews his determination to capture the man.

A neighbourhood's inhabitants are hesitant to reveal to the police what they know about a young girl's murder.

The enraged father of a runaway who turned to prostitution is accused of murdering her pimp.

Whitey's cousin becomes a murder suspect when the limousine he drives appears to be connected with several deaths.

Sympathy for the man's family makes Giambone reject suicide as the cause of a failing industrialist's death.

An eager TV newswoman (Cynthia Belleveau) puts her life in danger when she reports on a crime family's activities. With Scott Hylands and Jeff Wincott.

A rape victim learns that her assailant has been released from prison after serving only four years of his sentence.

A young astronomer sees a homicide through her telescope, but her frightened mother will not let her testify.

A young woman leads O'Brien and Giambone (Scott Hylands, Jeff Wincott) to a hit man who plans to assassinate the deputy mayor.

Giambone and O'Brien are assigned to investigate several murders after Kirkwood's friend gets involved with the Chinese underworld.

When a junkie who attempts to rob the bar is killed by an irate patron, Nicole hides the real facts from O'Brien.

Vociferous animal rights activists raid a research laboratory and steal monkeys to use in a propaganda campaign.

Whitey and his girlfriend become mob targets after he witnesses a murder during his pickup of stolen merchandise. Whitey and his girlfriend are forced to enter the witness protection program.

O'Brien (Scott Hylands) must re-evaluate his relationship with Nicole (Susan Hogan) when she becomes pregnant. Guest star: Elias Zarou. In addition, O'Brien and Giambone investigate a gruesome assault tied to a crooked restaurant owner who is indebted to a dying loanshark. With Jeff Wincott.

When Lt. Hogan is shot during a holdup, O'Brien and Giambone must rally behind the unfamiliar lead of a beautiful temporary commander to catch the assailants.

A young woman confesses to Father Torres that she witnessed her brother kill a friend over a disagreement during a mugging.

Carson (Stephen Mendel) feels responsible when Colby (Eugene A. Clark) is shot while investigating a robbery. With Scott Hylands and Jeff Wincott.

O'Brien and Giambone investigate the deaths of six illegal aliens who died in a shipping container trying to enter the country. Both are convinced another 'shipment' is on the way.

While investigating an unusual death, Kevin and Frank become curious about a wealthy family's effort to keep their dead father's memory alive. Frank is pursued by payroll because of his mounting debt.