A professional female impersonator, whose headline act is a perfect imitation of 1930s movie star Carol Marlowe, is overwhelmed with an alternate personality -- and murdering any man who is unlucky enough to be attracted to "Carol."

A sleazy radio host is accused of murder when a former girlfriend, who was pregnant, is shot.

Crooks heist a truck filled with gold, not knowing that the gold is the irradiated byproduct of a power plant experiment and extremely toxic.

A flute-playing "Pied Piper" (played by Ricky Nelson) talks teenage girls into prostitution, then disposes of them when they are no longer convenient. Stone's daughter helps him break up this murderous prostitution ring.

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

Mike's former partner returns to San Francisco, but not because of any longing for the good old days. He's back in town to kill the hired gunman who murdered his son years before.

A vigilante is methodically and savagely wiping out criminals who have managed to slip through the fingers of the legal system.

A music producer turns up dead; a popular singer he was producing an album for is convinced that he is going insane and killed the producer, but the truth is stranger.

Arnold Schwarzenegger plays a bodybuilder with a strong body but a fragile ego, who causes trouble wherever he goes.

A San Quentin prison guard tries to hunt down the criminals who escaped while under his guard.

Mike and Dan pursue a smuggler who will stop at nothing to locate a dog collar containing stolen diamonds.

Stone goes undercover as a bum to investigate the beating death of three homeless men.

Stone looks for the arsonists who set a fire that killed two firemen.

Women keep turning up in hotel rooms strangled; the only lead is a witness who thinks he saw an air force Colonel's uniform. Keller goes undercover as an air force officer to infiltrate the base.

When a lady cop is killed in a drug sting gone wrong, her boyfriend cop decides to take matters into his own hands. Stone and Keller try to stop him.

A retired history teacher goes off the deep end and takes it upon himself to take a group of his former students hostage in an empty, condemned school. There, at gunpoint, he proceeds to teach them the finer points of history.

An abused wife vanishes after a vicious attack by her drunken husband and all clues point to murder with the husband as the prime suspect, but he can't remember if he did it or not.

A salesman attending a convention wrongly believes that he is responsible for the death of an attractive female hitchhiker who had lured him to her houseboat.

A high-ranking hoodlum hires the androgynously-named "Sidney"--a hitwoman who's assigned to murder the three thugs responsible for the death of his son. She decides to let the police do her digging for her and moves in next door to Keller...

Bill Bixby plays a former CIA hitman who is hired by some kooky generals to assassinate a Red Chinese envoy on a state visit to San Francisco.

A single .25 caliber pistol affects many lives in a single weekend.

When a patrolman and personal friend of Keller has his arrestee turned loose on insufficient evidence, he goes on the warpath, endangering both of their careers.

A supposedly reformed sex offender believes he is going insane.

Keller goes undercover at a mental hospital to uncover the truth about a string of mysterious deaths.

Keller, temporarily partnered with a hotshot detective, sets out to discover why his new partner seems to be absolutely convinced of a murder suspect's guilt for no apparent reason.