James Blinn holds up a record store and finds himself in a police stakeout and a sick hostage.
A series of bombings occur with the description of an old grey-haired woman nearby. After questioning unlikely matrons Palmer and Locke dig deeper, learning of Jerry, a lonely man who holds grudges and is good at disguises.
A corrupt detective shoves Dr. Locke as he tries to run away with a pack of drugs.
A wino steals dangerous vials from Dr Locke after he gets involved in a car crash.
Double murder is the plan of an anonymous caller threatening Dr. Locke and his girlfriend.
Leo Leydon plays Locke's former medical professor who shoots an intruder and lets him die.
Guest star Paul Burke plays a hardened criminal who kidnaps a child (Yves Corbeil) who witnessed his holdup of an amusement stand at a summer picnic. The boy's terrified mother (Catherine Begin), ill and unable to speak English, tries to communicate her son's location to Police Surgeon Locke (Sam Groom) and Detective Lt. Dan Palmer (Len Birman).
Dr. Locke (Sam Groom) is held hostage by a mobster (Bruce Gordon) wounded in a gang war.
Locke uses a medical due to uncover a woman's murderer. A hard-working husband takes revenge on two hippie neighbors for the death of his wife.
A vengeful man abfucts an executive he blames for his wife's death.
The brutal beating of a ghetto youth leads to a tough cop being suspended---and gang warfare.
Police Surgeon Locke and Det. Lt. Dan Palmer search desperately for a 12-year-old girl before a crime syndicate can use her to lure her father out of hiding.
Locke has to find a sick girl who flees with an ex-convict.
Prison escape goes wrong and two men are trapped in a mine shaft.
Dr. Locke (Sam Groom) aids a wounded gang member on the run with his son, who's been incriminated in a murder.
Group of sightseers disappear while visiting retired actress's home.
Locke is accused of malpractice when a corpse vanishes from the hospital.
Locke plays psychologist to track down the would-be assassin of a former mobster.
Dr. Locke uncovers a swindle and murder when he treats a badly beaten millionairess.
Dr. Simon Locke discovers the secret identity of Det. Lt. Dan Palmer’s girlfriend when her life is threatened by a crime syndicate.
An ex-con on parole is assigned by Locke to drive the medical van, which be comes the get-away vehicle for a robbery.
Dr. - Locke is mysteriously poisoned and Lt. Palmer's only source of clues is a a former truck guard who was crippled in the robbery.
Dr. Locke attempts to outwit an officer who is out for revenge as they track down the killer of his former patrol partner.
Dr. Locke and Det.-Lt. Dan Palmer uncover an assassination plot when a visiting foreign dignitary is suddenly stricken with a coronary attack. George Chakiris guests.
A bout with terror when Locke tries disarming Tom, a man holding a roomful of hostages at bay with a hand grenade.