While investigating the background of a young man involved in a car crash, Det. Banner comes across clues indicating that he was involved in an illegal racket.
Const. George Bell returns to Yarra Central for another spell of temporary duty, and once again his enthusiasm and eagerness turns the station upside down.
A European paymaster is implicated in a payroll robbery, with tragic results. The Yarra Central police find that prejudice against immigrants in the district can affect their investigations.
Constable Dwyer attempts to establish a youth club for delinquent kids, and becomes involved with the theft of some power tools, a cop with a chip on his shoulder and a tough old matriarch named Porky.
The local newspaper and the Yarra Central police become involved when a wealthy woman, the wife of a successful business man, steals jewellery from a shop.
A prison officer is reported missing. He is later found unconscious but unharmed, and police investigate a possible case of revenge or blackmail by ex-prisoners.
Constable Dwyer orders Barry Ward, a young owner-driver, to have his truck made roadworthy within five days, but when Barry finds he cannot pay for the repairs he is drawn into crime.
Yarra Central police investigate some burglaries and come to a surprising result. The case involves a plain-looking girl and a heartless petty criminal.
Yarra Central police are searching for Sally Young, a prisoner from Fairlea Woman's Prison, who has escaped from policewoman Stewart. An aggressive old man who lives near the police station knows more than he has told them.
A series of baffling robberies from art galleries plague the Yarra Central police. Matters become complicated when it is revealed there is more than one group responsible.
A drunken group of elderly men get together for a surf life-saving club reunion. The party goes sour when one of the old men suddenly drops dead. Rather than report it to the police, they decide to bury their friend in the backyard.
Herbie Pike is a balding, middle-aged company clerk who has lived his life by the clock with only dreams of making a lot of money. Suddenly he breaks into crime in a very big way.
When Det. Sgt. Vickers's niece comes to visit, Det. Peters takes her out and on one of these occasions his car is stolen. Meanwhile, Yarra Central police are kept busy with a series of vicious assaults and robberies.
When top safe-cracker Barney 'Houdini' Ward gets out of Pentridge, his brother Clyde enlists his help to rob $100,000 in diamonds. Barney soon finds there is more to this 'nice safe job' than he was led to believe, and he implements a clever scheme to thwart a criminal organization led by a vicious Goldfinger-type woman.
Yarra Central police are faced with a series of crimes committed against women. Their investigations lead to a man who had been undergoing psychiatric treatment and whose wife divorced him, and who is seeking retribution against other women who have divorced their husbands.
An idealistic Scottish locksmith, who has been a communist all his life, resorts to crime when he becomes involved with Cliff Wood, an habitual criminal, to raise funds to go to Moscow.
Yarra Central police run into difficulties when they try to solve a number of hold-ups in which the getaway car is driven by a clever, mysterious driver.
Yarra Central police investigate the actions of a visiting yachtsman, Tom Anderson, who is involved in bird smuggling. Anderson has conned a young girl, Karen, into the smuggling racket, and events culminate with Anderson seeking revenge against Banner.
A vicious assault on a small baby alarms the Yarra Central police. They are in for another shock when they learn that policewoman Margaret Stewart is planning to leave the force.
