While dealing with a teenage shoplifter, Policewoman Stewart experiences a frightening ordeal when they are held hostage by a dangerous escapee from a mental institution.
A tough stand-over group runs a prostitution racket utilizing drugs and abduction. WPC Margaret Stewart finds herself in difficulties while undercover posing as a prostitute to crush the racket.
Lisa Clark, a doctor's wife, becomes an addict after her husband introduces her to drugs. Investigating a house breaking, police find that a youth, like too many of his age, has become trapped on a road of no return through drug usage.
A young constable is savagely attacked and seriously injured by five youths. The Yarra Central police put on a 'command performance' act to extract the truth from the suspects.
Investigations into the theft of valuable but difficult to unload electronic equipment result in Yarra Central detectives investigating a highly organized betting syndicate.
When the driver of an interstate gang is arrested, Yarra Central police see their chance to smash the racket by having Det. Peters acting undercover as his replacement.
Two men of short stature - one a notorious criminal who exploits his own build to his own advantage, the other a young misfit who resents his size - cause trouble for the Yarra Central police.
Det. Sgt. Vickers believes that Sen. Det. Banner's personal feelings may have impaired his judgment when Banner makes an all out effort to nail Eddie Parrish, a former policeman who has used his police know-how to muscle in on various rackets.
While police investigate a series of armed robberies, a young accountant tries to help his wife by giving police wrong information and is eventually blackmailed.
A bomb explodes in Yarra Central. Suspicion narrows down to a maniac who has escaped from jail, a thief, and a layabout protester. All have reason to seek revenge against the police - especially Det. Banner.
A young university student reports to police that she has been raped. A young man is charged, then additional information and the probing by the man's defense counsel creates doubts as to the truth of her story. Policewoman Margaret Stewart finds a romantic interest in the police doctor, Robert Whitfield.
An overworked detective, Barry Maguire, is transferred to Yarra Central on temporary duty and tries too hard to convict a criminal, with disastrous results.
A young man's bucks party is raided when the best man introduces a pornographic film to the festivities. When Yarra Central police investigate they uncover a world of vice and blackmail.
Leo Morrison escapes from prison to prevent his girlfriend marrying someone else, but his plans undergo a change when he picks up a girl hitch-hiker with decidedly unusual views.
Yarra Central police become involved when a woman receives threatening letters from her ex husband. As they investigate, they realize there is more to the situation than they first thought.
The Yarra Central detectives are called in to investigate the theft of gelignite from a local mining company. The team works through the usual suspects but it seems a new player may be in town.
Attacks on women in a Yarra Central street upset neighborhood relations, and the prime suspect is a man recently released from psychiatric care. Kevin Dwyer receives his long-awaited promotion to First Constable.
A family of criminals discover that Arthur Mitchell mints his own coins to supplement his pension. To muscle in on the racket, they kidnap his wife to force his co-operation.
Det. Peters is having some personal problems due to his impending divorce, and the Yarra Central police have to investigate an allegation that he is being bribed.
Det. Peters, concerned about his divorce, decides to resign from the force. He then meets up with Denis Marshall, an alcoholic whose own marriage is threatened. Peters tries to help Denis, and discovers his own domestic situation is not as bad as he thought.
Carol Hayes is prepared to break the law in order to keep 7-year-old Ronnie whom she has been caring for. The child belongs to the Turners, and Jean Turner wants him back because her husband Mike is being released from jail.
