Yarra Central police investigate a house breaking and capture the burglar, but unbeknown to them he isn't the only person in the house. The occupant of the house, a young girl, spends a day of terror until the police finally realize the situation.
Two attempts on the life of a youth and the subsequent murder of his girlfriend force Det. Snr. Sgt. Vickers into visiting Beechworth Prison in an attempt to get some information from one of the inmates.
An unstable girl is the victim of a terror campaign, little suspecting that the one person she trusts is behind it. Investigations lead to doubts about her mental health, however Const. Paul Gray, newly arrived at Yarra Central, proves his worth as a cop when he helps solve the crime.
Police are outsmarted by the extreme efficiency of a spate of robberies, until an ex-parole officer who has been recruiting an army of criminals emerges as the brains behind the scenes, recruiting an army of crims to pull the big jobs.
The daughter of an upper-class family, Sarah Carr, is found raped an a golf course. Yarra Central police become suspicious of her brother David, realizing he may be the cause of the crime by 'setting up' Sarah to be raped by his mates.
A factory manager is outraged when two bogus policemen steal a payroll from one of his staff. Policewoman Kim Baker works undercover as an employee when Yarra Central police suspect it could be an inside job.
Det. Sgt. Banner faces a coroner's inquiry, and indications are that he will leave the force. Banner is torn between his dedication to his police duties, and his love for his girlfriend Jenny who has recently contacted him from London.
The subject of rape is investigated by the Yarra Central police, not only as police but also as human beings. Policewoman Jane Bell is one of the major instigators of the discussions that take place, and the arguments that follow.
The parents of psychopathic teenager Wendy Sherlock have difficulty proving their innocence when it appears to the police that they are mistreating her. When a young man is badly slashed with a razor blade, the girl's parents suspect her - but she appears so innocent on the surface and displays such a plausible mien that even doctors and the police are fooled.
Agnes, a pathetic but happy alcoholic, meets another alcoholic, Fred, who asks her to marry him. Fred has a long history of violent crime, and Agnes learns that the only reason he wants to marry her is because her sister Beryl owns a wine bar, and he thinks it is a good way to ensure a lifetime supply of free grog.
A highly respected Yarra Central councillor is suspected of being involved in homosexual activities, but a youth who is involved gives police another version of the situation. Det. Sgt. Banner plans to marry his girlfriend Jenny Franklin, and resigns from the police force to take an extended honeymoon and to find a 'more suitable' profession.
Sen. Det. Tom Morgan transfers to Yarra Central, and his first case is that of a missing paper boy who is found dead, the apparent victim of a hit and run accident. Investigations lead the Yarra Central police to a nearby factory.