Stone has to work with a rather independent undercover cop after Keller gets shot in the leg during a bust.

After a mob enforcer, still wearing his brass knuckles, falls to death from a high-rise hotel window, the police seal off the hotel and hunt for two other mobsters and the down-and-out boxer who was their planned target.

A young patient from a psychiatric home tells the police that an elderly patient at the facility was murdered. After the young man is found dead himself, Steve decides to feign mental illness to gain admittance to the place, fearing that someone may be killing patients.

A 12-year-old girl knows her stepfather murdered her mother. But her attempts to unmask him only impede the police's investigation.

A supposedly reformed sex offender is being brainwashed by his psychiatrist into believing he has committed murder.

A string of taxi caps are robbed and and the brains behind the robberies is an 18 year old high school senior. His mother and deceased father were both robbery detectives.

After Steve gets hit by a car, Mike is demoted to patrolman for disobeying orders and threatening a mob boss.

The remains of an inmate at the Alcatraz Federal Prison was discovered between a wall during some repairs. It was thought that the inmate Lou Kovic escaped 20 years earlier, but Mike and Steve believe he was murdered.

Officer Jimmy Vega's personal vendetta against a local drug dealer threatens to ruin both his and Inspector Keller's careers.

When a humble shoe repairman confesses to murder, Stone and Keller suspect that he's taking the fall for the real killer.

Drama follows a 25-caliber gun over a week-end and the various lives with which it comes into contact.

Mike's old partner returns to town looking for the hit man that killed his son.

Keller goes undercover as a USAF officer to investigate a woman's murder that might involve a USAF Colonel.

Young Paul is torn between Lt Stones efforts to take him off the streets and go to college and his brother, part of a street gang. One day he witnesses the head of the gang committing a murder on an rivaling street gang boss. His brother convinces him in joining the gang and to kill Mike Stone, who has started to investigate on the murder case in the scene.

An abusive step father is murdered. The boy's mother attempts to blame a neighborhood kid. The abused boy knows the truth but is afraid that he he will incriminate someone close to him no matter what he tells the police.

Domestic terrorists take several people hostage, including Keller. Stone has to deal with not only the terrorists but a right-wing journalist and a vengeful father whose daughter was killed.

The prime suspect in a murder case may be innocent of this crime, but he fears Stone and Keller will discover he got away with murder once before... 25 years ago.

A lonely maiden woman in her mid 40s is stalked and targeted by a psychotic drifter. Meanwhile she has a long term affair with a Canadian political leader. Stone and Keller need to solve several mysteries.

Keller goes undercover as a draft dodger to investigate an AWOL Marine's murder.

John Davidson's best acting performance (in the eyes of nearly everyone associated with the show) comes when he plays a nightclub entertainer who dresses up as a famous female torch singer. Unfortunately he is schizophrenic, and becomes her and him -- at the same time. Even worse, "she" is a psychotic killer. Watch for a chilling scene where "he" talks to "her" in a mirror.

Stone and Keller have less than 48 hours to prevent a politically motivated assassination by a mentally unstable, but very accurate, marksman.

A traveling hit-woman seduces Inspector Keller, gaining valuable intelligence for her San Francisco assignments. A mob hired her to help win a gang war, which Keller is investigating. Keller's superior Lt. Mike Stone hears wedding bells, but death knells are more likely as she's living in a bay-side apartment next to the younger, love-struck Keller.

Alcoholic Off. Joe Landers accidentally gets his partner killed and clumsily tries to cover it up as Stone and Keller work their way to the truth.