O'Brien and Giambone investigate the shooting of teenagers who took a joy ride in a terrorist's car filled with weapons.

Kirkwood happens on a serial killer when he goes undercover as a derelict to research a story on the homeless.

A pretty museum curator helps investigate an art theft that occurs when a mystery man causes a disturbance.

A security guard (David Ferry) hitches a ride with a group of drug smugglers. Guest stars: Suzanne Coy, Clark Johnson. With Scott Hylands and Jeff Wincott.

Investigation of an illegal alien's death propels O'Brien and Giambone into the politics of a Caribbean nation.

O'Brien risks his career and his relationship with Nicole when he becomes entangled with a murder suspect.

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.

A lounge singer is seen arguing with his cousin over money. The cousin is later found murdered. Does the lounge singer have ties to the mafia? O'Brien and Giambone seek the cooperation of a frightened singer (Danny Aiello) blackmailed by the mob.

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.

O'Brien and Giambone enter the world of child pornography while seeking a runaway whose father was killed searching for her.

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.

O'Brien and Giambone (Scott Hylands, Jeff Wincott) uncover a drug-smuggling ring that uses innocent senior citizens as couriers. Guest stars: Kay Tremblay and Cec Linder.

When a mobster decides to testify against his boss, O'Brien and Giambone grudgingly agree to protect the informant.

Kirkwood's old friend, a presumed-dead rebel leader in South America, wants everyone to know he is alive.