Peter O'Brien breaks out of prison, killing a warden and taking his gun. He sets out to kill the two detectives who put him inside.

A scrawled note, a milk bill and a wrecked room confront the police when they investigate the death of a clergyman. Mackay is promoted back to Detective Sergeant.

Police struggle to come up with a motive for why a killer shot three people, until they discover his murder victims are all connected with Chinese people.

A man knocks on the door of a house and tells the people there to call the police because his wife has been murdered, but police believe that he killed his wife and set about proving it.

Using the Moomba festival crowds as cover, a gang of jewel thieves, headed by an American, keeps the police guessing. A report that a schoolboy has disappeared alerts detectives to more sinister activities.

Ray Fox is shot at when he leaves his flat. He goes straight to the police, they investigate and discover a fraud racket that leads them to another murder three years ago.

Linda Neilsen walks out of a staff party to a violent death, but three suspects emerge to confuse the issue, and one of the three is the killer.

People notice Ron Paige and think he is a charming youth, which is a big help to detectives investigating a puzzling case of callous murder.

Concerned for the safety of a murder witness, police hide the man at Dromana. However, the ruse is discovered and the police must protect him from a group of criminals.

Joan Ordini is stabbed to death while walking home at night. Homicide detectives have three suspects, then police find out that rosary beads are missing from the victim and they find them in possession of the killer.

Sally Trevor is shot dead on a busy city street. The killer's description tallies with her long-time admirer Arthur Parrish.

Maree Duncan tells police her husband has threatened to kill her, and soon afterwords she is found shot dead. Is the killer her husband or the man whose company she preferred?

Arthur Lowe's taxi is stolen. And police have a job tracking it down and when they did find it implicates someone else in a murder.

Margaret Boyce makes a suicide pact with an older man that she loves after her parents refuse to give their permission to get married. When she dies and he doesn't, police have to figure out if it was suicide or murder.

16-year-old Anne Vincent meets a violent death by human hands or something else. Homicide are called in to investigate and are confronted by strange evidence.

Is Maggie the abused wife she claims to be? Arrested for shooting her husband, she says it was self defence but suspicion comes up between Maggie and her stepson.

Lorraine Purvis's classmates are shocked when she falls to her death from a roof. But some of them are suspects as police try to establish if it was suicide, an accident or murder.

A man is fatally stabbed. llona Tabori, his drunk friend, wakes up the next morning and finds the knife beside her and fears that she might be responsible for it.

Mackay and Hudson pursue a crazed gunman who has taken four lives. And Hudson is pursued by a gun activist about the right of police to fire on criminals with disastrous results.

A man is strangled to death, and in the search for his killer Homicide detectives uncover a macabre story of drug addiction and the relentless exploitation of its victims.

An art collector is stabbed to death and investigations have just begun when Det. Hudson's girlfriend 'Tinker' Bell is reported missing. Tensions mount as her disappearance is linked with the main murder suspect.

A small boy sees blonde Trudy Gardner threatened with a gun, but when police arrive her flat is empty - though there is every sign she has been murdered.

A mother and her two young daughters are shot dead on a country road, and detectives learn that a car abandoned nearby belongs to their neighbour, Roger Fry, an ex-Royal Australian Air Force officer with a war neurosis, who has vanished.

Immediately after buying a racehorse, horse dealer Jim Craig is shot dead. Craig's dubious background suggests several motives, but it soon becomes evident that the horse 'Seven Winds' is the focal point in a bitter conflict.

Scotland Yard enlists Homicide's aid in locating Joan Preston, suspected of having killed her husband in England. They find not only Joan but also her sister-in-law, who is convinced that Joan has killed once and is planning to kill again.

A body is found on a beach with a lone clue - a cigarette lighter inscribed 'In memory of Milk Train'. But what milk train?

Blonde Karen Barrett's first brush with the law is on a shoplifting charge, but policewoman Helen Hopwood senses something more sinister in the girl's background. Homicide detectives prove she is right.

Roger Lang is found shot dead, and suspicion falls on nightclub singer Julie Temple, whose fingerprints are on the gun. Investigations lead to Julie's ex-husband, Harold Barker, who has resorted to an evil scheme to gain custody of his child.

On the run after breaking jail, Tom Delaney robs a bank and shots a veterinary surgeon. Seeking a hiding place, he holds country school teacher Ann Pritchard as a hostage.

Confidence man Warren Hardy becomes involved with the death of a man and blackmails a wealthy socialite in an attempt to pay a gambling debt.

A teenage girl on holiday finds a baby's body in the river. There is doubt as to whether it was accidental drowning or murder. The blanket wrapped around the body supplies a vital clue.

Young Counstable Foster, suspecting a factory robbery, fires at a man who is running from the scene. When Homicide detectives question him, he realises his police career could be in jeopardy.

Laura Steiner has an insensate jealousy of her stepdaughter llse, so she makes a plan to stab her to death and plant false clues to implicate someone else.

A payroll guard is killed and another wounded during a $25,000 robbery. Folk singer Susannah Lane offers Homicide detectives information on the gang's identity, but when her intentions become known her life is threatened.

Laurence Somers, an ex-cop now prominent in trotting circles, falls from a speeding train. Homicide detectives suspect foul play, and within a few days murder is committed at the trotting track.

Two men fight on a river bridge. One loses his life, the second vanishes, and the Homicide team set out to trace a man of whom they know practically nothing, except that he is tall and casts a long shadow.

Peter Lovegrove is shot dead on his doorstep, but he leaves documents proving him a blackmailer. This makes the murder motive obvious, but police discover a different crime racket before determining which victim fired the fatal shot.

A girl shot dead near the zoo is identified as Christy Baker, teenage daughter of the zoo's lion keeper Alex Baker. As the Homicide team investigates, Christy's tragic life story unfolds in flashback.

After serving 15 years for murder, Geoffrey Gibson still claims he is innocent. Suspicions about a former witness cause the case to be re-opened.

A woman dies mysteriously in the country, making a puzzling case for detectives as they try to determine if she died from natural causes or foul play. Investigations lead to a house called "The Haven" where they hope to find an answer.

A motorist dies in a Hume Highway crash when his car goes up in flames. Police soon discover it wasn't an accident, and the Homicide squad's investigations lead them to the wife of a man who planned a murder to swindle an insurance company.

A shot is fired at the celebrated Polish painter Alex Kapolski during an exhibition of his work. Police at first believe it is a prank, but they think again when Alex receives a note threatening his life.

As motor-cycle policeman Const. Bourke overtakes a speeding car on the Geelong Highway, the driver deliberately rams him sending Bourke to his death as the bike crashes over a bank in flames.

A man is found dead on a doorstep. The principal witnesses, two elderly women, insist that a ghost was responsible. The homicide detectives soon discover they have to grapple with something more dangerous than a ghost.

Det. Sgt. Mackay runs into danger when he discovers the hideout of "The Intruders", two men who have been terrorising and robbing people in their homes.

Teenager Margaret Lambert hears her boyfriend's familiar whistle, and she runs happily out to meet him. But death is in her path and Homicide detectives find evidence of murder.

Sen. Det. Doug Marshall is shot and badly wounded during an investigation into the murder of gambler Bernie Little.

Gina Lambton's son goes and talks to Inspector Connolly, on suspicions that he thinks his mother is being poisoned. The Inspector takes a concerned interest and investigates the case suspecting the father is doing it.

A quiet stroll turns into a nightmare for expectant mother Rebecca Jones when she witnesses a murder. The gunmen threaten her with death if she goes to the police.

Pamela Reynolds sees a man's body put on a railway track near Ballarat. She is afraid to go to police in case she is expelled from school, but her conscience soon gets the better of her and she goes and talks to Insp. Connolly.

Security guard Dave Carter is shot dead during a factory break-in, and his partner Harry Parr is knocked unconscious. Homicide detectives believe that Parr can help them identify the killers, but he won't talk for personal reasons.

When a woman's skeleton is discovered in a burnt-out bush shack, Homicide detectives question an old firebug whose description of a tall man seen leaving the burning house provides an important lead.

A pedestrian is killed by a car that TV personality Lyn Eliot-Smith is a passenger in. Lyn and the driver panic at the thought of the adverse publicity that will result if they report the matter to the police, and subsequent events reveal that more people were involved than first meets the eye.

Businessman Lloyd Chandler's staff arrive at work one morning to find his secretary dead in his private office. Chandler becomes the prime suspect for her murder.

The guests at a fashionable dinner party are shocked when Stephen Galliard collapses and dies. Homicide detectives discover he was poisoned when they find in his glass the unmistakable odour of bitter almonds.

A small girl's birthday party turns sour when she disappears after playing a game of 'Crocodile' in a local playground.

Gentleman farmer John Lancaster is shot dead and robbed while making up his payroll. His son falls under suspicion when he disappears.

A baker reports to police that he has found a woman customer shot dead and a man's body nearby. Detectives are puzzled when they can find only one body at the scene.

Teenager Joy Hamilton secretly dates a former boyfriend and while they are out together he is shot dead. Homicide detectives think she knows more about the murder than she is letting on.

Television personality Sunny Miles makes the headlines when she wins custody of her two children, but within days of her triumph she is stabbed to death.

Someone takes a shot at former gambler Nick Corbett. He is not injured, but police suspect that another big-time gambler, Norm Hansen, is out to get Corbett and will try again.

An hour after a night out with some friends, Ron Gibson is shot dead in his driveway. Police enquiries reveal there was no love lost between Gibson and his neighbours.

After Tina Carroll has left for holidays on the Princess Of Tasmania ferry, her friends are horrified when a body answering her description is found by a fisherman at Black Rock beach.

Aboriginal gardener Jim Paterson finds his employer, John Fleming, stabbed to death. Police find that many people will benefit from Fleming's will, including Paterson.

When Jill Henderson is found strangled, police have two suspects - her boyfriend, and an older man she was seeing on the side.

The difference between car racing at Templestowe Hill Climb and speeding on the road is stressed when Det. Sgt. Mackay meets an old Air Force friend who asks him to clear his son of a speeding charge.

When king pin gangster Keith Wells is shot and critically wounded outside a grocery store, detectives question known criminals including former king pin Norm Jamieson who was recently released from prison.

Separated from his wife, artist Graham Reid is horrified when she calls at his studio and slashes one of his best paintings. He is later questioned by police when she is found unconscious in a telephone booth.

Aged pensioner Wally Walters and his sister Kitty find a well-dressed man's body covered by sheets of tin at a dump. Afraid they will become involved, they don't tell the police, and Wally soon finds he's involved in a counterfeiting ring.

When Christine Foley is attacked in a dark street, detectives have three suspects, until a missing letter provides them with their biggest clue and uncovers a blackmail attempt.

The difference between car racing at Templestowe Hill Climb and speeding on the road is stressed when Det. Sgt. Mackay meets an old Air Force friend who asks him to clear his son of a speeding charge.

Elderly Geoffrey Collins pleads with his former girlfriend, Eileen Webster, to return to him. When she refuses he goes into a jealous rage and shoots her dead.

Harry Millet, well known trainer of athletes and boxers, is shot dead as he is timing one of his runners. Police investigating the case discover that he had many enemies in the sporting world.

A former Sydneysider, Tom Carrell, is shot dead while riding a motor scooter, and young Sydney vice squad detective Peter Barnes, who is in Melbourne on exchange duties, assists the Homicide squad in their investigations.

A ride on his bicycle along a quiet country road brings tragedy to Martin O'Brien when he is killed by a hit and run driver, and Sandra Fleming becomes a girl in conflict dealing with the social problems and temptations of a modern woman in a big city. Det. Peter Barnes is permanently transferred to the Homicide squad.

A school classroom is burnt down and a woman's body is found beneath the rubble. Detectives find evidence pointing to arson.

Teenager Loralee Bennett is at the center of a feud involving her jealous boyfriend David Harding which leads to a murder when a group of young people, including their mutual friend Chris Miller, are holidaying at Mt. Buller ski resort.

When a man out rabbiting is shot and critically wounded, pop star Gavin Jones from the 'Love-In' discotheque becomes a prime suspect because of his fanatical hatred of blood sports and animal killers. The clues to the murder lie in the lyrics of three songs that Jones wrote.

A teenage girl in a country town is strangled in her home by an intruder. When police begin questioning newcomers to the district the killer takes off in panic. On the run, the killer makes a savage threat to another young girl.

Marika Kerteli, ambitious editor of a publishing company, learns that she is to be sacked. In retaliation, she plans the ruthless murder of her employer.

A number of drunks have been allegedly assaulted by policemen, and Const. Allan Larkin comes under investigation by Homicide detectives.

A warder is killed at a prison farm when two prisoners escape. The Homicide team swing into action to recapture the two escapees, Lennie Lister and Dick Boyd.

A policeman is killed by masked bandits during a payroll robbery, and Homicide detectives rely on an informer to help them with their investigations.

When a stripper called Lita is strangled, Homicide detectives search for the last person known to have seen her alive - a mysterious Mr. Smith. Another stripper, Trudy Wheeler, helps police with their investigation.

An elderly man is murdered in his wheelchair and his wife, fearful for her own safety , asks their former nurse, Maggie Keating, for advice. Maggie, in turn, contacts her boyfriend, Det. Sgt. Mackay, for assistance.

The manager of a drive-in theatre disturbs a car thief at his home, and the thief retaliates by knocking him down with his own car, causing critical injuries. Investigations reveal there is more to the motive of the crime than was first apparent.

Expert safe breaker Earl Tyrell is shot dead by a fellow gangster after organizing an ambitious robbery.

A girl is strangled after announcing her engagement to roadhouse proprietor Chris Anderson. Homicide detectives question three suspects, all with a motive for murder.

Lew Hoskin is shot at and wounded while hunting kangaroos. Although Homicide detectives suspect attempted murder, Hoskin insists it was accidental.

A daring jewel robbery by three masked men leads to murder when witness Joe Martini attempts to stop them from escaping.

The body of ex-sideshow man James Munro is discovered in a creek, and police question a group of carnival folk camped on Munro's property.

When the body of go-go dancer Darlene Sadler is found at Beaumaris Beach, detectives discover that she had answered an advertisement to perform at a Melbourne club.

A seven year old boy is found strangled in a park, and detectives suspect teenager Phillip Wright, known to be the last person to see him alive.

A hunt for two escapees from French Island Penal Settlement leads police to murder, blackmail and a savage attack on Det. Barnes.

Two young people, lost in the bush, find a skeleton in a cave. Insp. Connolly interrupts his holiday to investigate the case, thinking that it could be connected with an unsolved bank robbery and murder.

A garden party at Vincent Rowe's home ends suddenly when Rowe is shot at and wounded during an argument. Homicide detectives get a lead from singer Pamela Grey - a guest who witnessed the shooting.

Vic Webster, formerly on the staff of business agent Ambrose Cook, is found shot dead in Cook's office. To avoid being implicated, Cook decides to hide the body in the bush.

Jenny Radford is kidnapped on her way to school, and her parents are told by phone that they will not see her alive again unless they hand over $250,000 in cash. Detectives search for a green car, their only clue.

Radio store manager Ralph Nixon is shot dead while listening to the final movement of a concerto. Police suspect young soldier Andy Beckett, who accused Nixon of having an affair with his girlfriend, and who has since gone AWOL.

The body of a man dressed in a dinner jacket, black tie and a grotesque party mask is found in the pantry of an old home up for sale.

A secretary finds she is pregnant to her former boss, Alan Booth. With her current boyfriend, she blackmails Booth, who is married, for $10,000. Then Booth is stabbed with a paper knife during an argument with his stepson, who says it was an accident. Later Booth is found stabbed to death in a car park, and four people are under suspicion: the secretary and her boyfriend, her father, and Booth's stepson.

A well known Greek identity is critically injured when his car is blown up. Police inquiries lead them to cafe proprietor Con Lucas, who later receives a bomb threat. Police seek Johnny Patric, girlfriend of Con's daughter Helena Lucas, in connection with the attempted murder.

Ken Morgan goes on a killing rampage after a youth has attacked his son, and comes face to face with Sen. Det. Hudson. After being forced to shoot Morgan, Sen. Det. Hudson decides he has had enough and leaves the Homicide squad.

The body of model Helen Parkes is found on a beach. A shattered champagne glass gives detectives an important clue, and leads to three suspects. Model Jan Barlow, who was making a car commercial on the beach, later becomes involved in the murder.