Gritty crime drama set in San Francisco, featuring an older, veteran cop and his younger, less experienced partner.

A would-be Jack The Ripper stalks the city, slashing to death prostitutes. Stone assigns a resistant Keller with protecting a prostitute who has been threatened.

Stone and Keller contend with an AWOL Vietnam War soldier determined to abduct a five-year-old child.

Stone and Keller uncover the seedy world of escort services when their suspect is a cultured art collector with a Pygmalion complex who hires escorts determined to create in them his idealized woman.

Stone is sidelined with a broken ankle, so Keller teams up with hot-headed Inspector Jim Martin to track down a young Mexican suspected of murder. But Martin's prejudice against Mexicans threatens the investigation's success.

When a parolee whom Stone once coached in the Police Athletic League is accused of murdering another ex-con, Stone, Keller and a caring social worker rally to his defense.

A city official is murdered in a botched mugging by a gang of three sophisticated criminals unaware of his high profile. The mayor, convinced it was a political assassination, orders Stone and Keller to crack the case.

Two young women are found murdered in a swinging singles apartment complex. As Stone and Keller investigate, they uncover multiple suspects with a motive to murder the two gold-digging, teasing "takers."

A band of modern-day Gypsies descends on San Francisco, its aging patriarch unaware that the younger generation has moved on from the traditional flim-flam to million-dollar heists and murder.

An ex-con college professor takes a bullet to the shoulder when a hit-man murders a blackmailer. But the professor refuses to have the bullet removed, and the hit-man is hot on his trail to recover the incriminating bullet.

Stone oversteps his authority when he entrusts to a traditional Greek patriarch his ex-con son just released from San Quentin. When the son is implicated in a suspicious fire, Stone and Keller's investigation uncovers ugly family secrets.

An artist is thrown to his death from his apartment window. Stone and Keller's investigation centers on the daughter of a renowned eccentric poet, who sets to spinning a web of deception to deflect the dogged detectives from her trail.

Two crusty fishermen at sea stumble upon an illegal alien smuggling ring. The smugglers murder one of the fishermen and pressure the second into silence, stymieing Stone and Keller's investigation.

In her zeal to capture a serial rapist, a rookie cop flouts Stone's orders, jeopardizing not only Stone and Keller's carefully choreographed stake out but her own life.

A hit man living a new life with a family in France is lured out of retirement by his former employer, a crime kingpin determined to rub out every witness to a murder he committed.

A greed-consumed numismatist plots to switch a wealthy collector's gold double-eagle coins with counterfeits, using and abusing his trusting accomplices along the way.

A war among gambling bosses is being waged. Stone and Keller attempt to locate and protect a vital witness from a hit man who has charmed his way into a lonely schoolteacher's apartment in order to secure a clear shot at his victim.

A veteran newspaper columnist and longtime friend of Stone's accidentally kills his young, two-timing mistress and then attempts to pin the rap on the young stage actor she was seeing.

Stone is held hostage by the Cobras street-gang, which demands an exchange for its wounded leader who was captured in a bungled robbery. Keller and Devitt scour the city's seamy underside in their search for their friend and colleague.

Three young boys open a Pandora's Box when they sneak into an eccentric old man's home, a mysterious house rumored by their parents to contain a million-dollar treasure.

A homicidal rapist that Stone had put away twelve years earlier is released and begins waging psychological warfare on Stone by stalking his daughter Jeannie.

A child is murdered in a bungled burglary and the killer is set free on a legal technicality. Despite Stone's strenuous objections, the grieving father is determined to take justice into his own hands.

A high-powered Commerce Dept. official is harpooned on a pleasure boat. Stone and Keller sift through the suspects, among whom are a senator, a boat builder and the grieving widow, who is an old friend of Stone's from the Potrero.

After three winos are brutally beaten to death, Stone goes undercover as a bum to crack the case.