Maverick cop Sgt. Bluey Hills is set up in the newly formed 'Department B', which has been created especially for him, largely because no-one else wants to work with him. His first day brings the tragic case of a young policeman who has been killed by a car bomb blast. Bluey is hindered by the boy's father, a retired policeman, who thinks the police aren't doing enough and decides to take on the investigation himself.

Bluey is out to get small time crim Tony Benson - and Benson is very much aware of it. Benson makes several attempts to discredit Bluey, including planting a fake bomb in his car and appearing to commit a 'robbery' which never occurred. Bluey is subsequently suspended from duty, and is only brought back into favour by the efforts of Det. Gary Dawson.

A paroled criminal’s daughter is kidnapped by two men intent on obtaining the money - proceeds from past robberies - that he has hidden away. Bluey is reluctant to get involved, especially when it appears the kidnappers know his every move even before he does.

Walter Curran is a petty criminal who always gets caught. Bluey's attempts to reform Curran fail, and Curran’s son follows his father’s footsteps into crime, bringing a tragic consequence for the whole family.

Eric Yates, a brilliant criminal, escapes custody while attending a funeral. Bluey is baffled by Yates' disappearance, and questions whether the escape was actually Yates' idea. The only clue seems to lie with Yates' wife.

Bluey hounded ‘Mack’ McKenna until he moved his criminal operations interstate, where he was jailed for five years. Upon his release, ‘Mack’ returns seeking revenge. Notes: A fire in a burning building scene where Bluey rescues some tied up people got out of control in the studio, causing some anxious moments - no-one was hurt.

Bluey investigates when a contract is put out on underworld figure Vic Nelson, and word is that a policeman will carry out the deed.

Bluey comes into conflict with a detective from the Federal police when Department 'B' is ordered to assist in the investigation of what seems to be a major drug smuggling racket.

Bluey is given a political assignment to protect James Conder, a British mercenary who was last known to be operating in a South American war. Bluey dislikes the task, and matters are complicated when Conder disappears with Jo Goldman.

Bluey investigates when a man's house is broken into and his family held hostage while the man himself is forced to open and empty the safe at his office.

Bluey investigates some truck hijackings, which develops into a personal crisis for Det. Dawson. After an undercover assignment, he returns home to find Jo gone.

Bluey investigates when a reporter is killed after discovering the infiltration of a respectable company by criminals using it to launder money.

Dawson believes Bluey's obsession with 'Muley', a criminal who won't talk, is affecting his judgement, and Bluey quickly reaches breaking point.

Truscott's cover is blown by a gang of criminals, and matters are complicated by Truscott's involvement with a former girlfriend of one of the gang. Truscott has to count the cost of his undercover life and the demands it makes of him not having a personal life.

Emma Evans claims her son is innocent of murder. Nobody, including Bluey, believes her - until she becomes a hit and run victim. Bluey starts to dig, finding twists and causing upheavals which lead to the A.C. threatening to suspend him.

To get Bluey out of the way, the A.C. sends him to the remote country town of Mooball to investigate a possible homicide following the discovery of some old bones.

Bluey investigates an alleged assassination attempt on has-been movie star Brad McGraw, who has recently returned home to Australia.

Bluey assists the Commonwealth authorities to help combat a flood of counterfeit notes. His task is complicated by the activities of young reporter Debbie Morley who becomes a victim of the swindle.

Bluey helps a stowaway boy, who can't speak English, to find his father. He discovers an illegal immigration racket, and Det. Dawson gets mixed up with a strange girl known as 'Seaboots'.

Det. Sgt. Blakely begins a blitz on massage parlours. Bluey suspects Blakely is corrupt when he gives favourable treatment to parlours run by Rankin. When Bluey discovers that Blakely is a drug addict, supplied by Rankin, Blakely tries to kill Bluey.

After the arrest of a private detective, several photo negatives which are a crucial part of the evidence go missing. Shortly afterwards, Det. Gary Dawson begins acting suspiciously, spending more money than he earns. Bluey suspects that Det. Dawson is on the 'take'.

The Assistant Commissioner tries to get Bluey to take some leave just when Det. Gary Dawson's investigations into a series of cat burglaries start to bear fruit. After an encounter with the cat burglar, who proves too agile for Bluey and escapes, ridiculing him in the process, the suspects are gradually narrowed down to one as Bluey becomes more and more determined to find the 'cat'.

Monica becomes involved with an eleven-year-old shoplifter called Cricket. Bluey warns Monica to stay clear of Cricket, as she may hamper his investigations into a car theft racket. But Monica 'does a Bluey' and goes off alone - with alarming consequences.

Against Bluey's advice, Det. Dawson accepts an undercover assignment to investigate a large scale drug smuggling racket. While undercover he renews an old acquaintance with Sandra Gibson, a girl he knew from his modelling days who is now involved in the drug smuggling.

Det. Gary Dawson works undercover with Sgt. Tracey Alexander from the NSW Police to investigate a series of armoured truck hi-jackings. They form an emotional attachment, however things go wrong on the operation - with tragic consequences.