Cold Case Investigations covers mostly murders or suspected murders - such as Ashley Coulston, Mr Cruel and Ivan Milat - with the victims as the focus. Not only because, criminologically speaking, the more you can learn about your victim the more you can extrapolate about the person who killed or abducted them, but also because they deserve their stories to be told. They deserve for people to know their names. They shouldn't just be someone's victim.

In the very depths of the human soul there is a darkness. It is an entity which most of us may never get to know; for others, however, this darkness grows for years until it takes hold of them and permeates every inch of their body. This darkness is evil incarnate, and it is in the hearts and minds of some of the most dangerous and despicable human beings to have walked this same earth we live in today. In the following volumes, you shall discover the stories of six murderers so tainted by darkness that their horrific accounts still bring fear to men and women of our present day.

1977, Collingwood. Two young women are brutally murdered. The killer has never been found. What happened in the house on Easey Street? Why has the Easey Street murderer never been found, despite the million-dollar reward for information leading to an arrest? Did the women know their killer, or were their deaths due to a random, frenzied attack? Could the murderer have killed again? This gripping account addresses these questions and more as it sheds new light on one of Australia’s most disturbing and compelling criminal mysteries.

In an incredible 25-year career as a homicide detective, Ron Iddles' conviction rate was 99 percent. Yet that only partly explains why Iddles is known to cops and crims alike as 'The Great Man'. Tough, inventive and incorruptible, stoic in the face of senseless horror yet unafraid to shed tears for a victim, Ron has applied his country cunning and city savvy to over 320 homicide cases - some of them the most infamous, compelling and controversial crimes in the nation's history. To the victims of crime, Ron is both a shoulder to cry on and an avenging angel.

Here I am: tall and broad, shaved head, had my nose broken three times fighting. Black suit, white shirt, the big city homicide detective. I've led investigations into serial killings, child abductions, organized crime hits, and domestic murders. But beneath the suit, I've got an om symbol in the shape of a Buddha tattooed on my right bicep. It balances the tattoo on my left ribs: Better to die on your feet than live on your knees. That's how I choose to live my life.

The matriarch of Australia’s most violent and notorious criminal family, and allegedly the inspiration for the award-winning film Animal Kingdom, tells her side of the story. Kathy Pettingill is a name that’s both respected and feared, not only by Australia’s criminal underworld, but by many in the Victorian police force. As the matriarch at the head of the most notorious and violent family of habitual offenders in Australian criminal history, her life has revolved around murder, drugs, prison, prostitution, and bent coppers.

Tara Costigan was the woman next door. A hard worker. Quick to laugh and easy to like. She was happy, confident, strong. A woman who always looked after herself and her kids. Close with her family and her friends, she was much loved. Then, in 2013, she met Marcus Rappel. A local tradie, he was charming and sincere, they dated and fell in love. That should have been the end of a happy-ever-after story. But for Tara, it was much uglier. And for her family it would be devastating. 

This is the true story of Keith Banks, one of Queensland's most decorated police officers, and his journey into the drug scene as an undercover operative in the 1980s. In an era of corruption, often alone, with no backup, he and other undercover cops quickly learned to blend into the drug scene, smoking dope and drinking with targets, buying drugs and having dealers arrested. Very quickly, the lines were blurred between his identity as a police officer and the life he pretended to be part of. 

He is 29 years old and commits his horrendous crime alone. He is an underachiever, unskilled, doesn't have a regular job and he is now a mass murderer. What made Martin Bryant go on a brutal killing spree at Port Arthur taking the lives of 35 people?

Devious, daring, cunning...but ultimately too greedy, too cocky. Gangland Oz exposes the country's pantheon of crooks and criminals since the first convicts stepped ashore and got to work. Ten years on from the original best-selling Gangland Australia, top true-crime writer James Morton and barrister and broadcaster Susanna Lobez conspire again to track the rise and fall of Australia's talented contract killers, brothel keepers, robbers, bikers, standover merchants, con men and drug dealers.

Melbourne's gangland war was an era dominated by murders, stings, hits, drug busts, corruption, and greed - inspiring best-selling books and even a popular TV series, Underbelly. It took the police a decade to curtail the violence and bring down criminal kingpins Carl Williams, Tony Mokbel, and their accomplices. When the police finally closed the case file, just how they really won the war, with the help of an unlikely police informer, would become a closely guarded secret and its exposure the biggest legal scandal of our time.

The chilling true story of the heinous murder of Karlie Pearce-Stevenson and daughter Khandalyce and how the case was cracked. How did two girls go missing for seven years and nobody noticed? In August 2010, dirt bike riders discovered human bones in the notorious Belanglo State Forest, where Ivan Milat had so cruelly tortured and slain seven young backpackers. The remains were those of a young woman, who the police dubbed 'Angel' after a T-shirt emblazoned with the word 'Angelic' that was found near the body.

In the Australia of the 1960s, '70s and '80s, armed robbers were the top of the criminal food chain. Their dash and violence were celebrated, and men like Ray Denning and Russell 'Mad Dog' Cox were household names long before Underbelly established Melbourne's gangland thugs as celebrities. Both were handsome, charismatic bandits who refused to bow to authority. Both were classified as 'intractable' in prison, and both escaped. Cox was the only man to escape from Katingal, Australia's only 'escape-proof' jail. Soon after he broke out, he tried to break in again and rescue his mates.

The police force can be a tough place for a woman, but Detective Superintendent Deborah Wallace rose to the top with grace, humour and an iconic sense of style. In her incredible 36-year career with NSW Police, Wallace took on murderers and drug suppliers and dismantled the state's most nefarious gangs. Tenacious, perceptive and sharp, Wallace commanded a range of police crime squads, bringing order to the Wild West of 1990s Cabramatta and busting criminal bikie gangs with Strike Force Raptor until her retirement in late 2019.

Christopher Berry-Dee is the man who talks to serial killers. A world-renowned investigative criminologist, he has gained the trust of murderers across the world, entered their high security prisons, and discussed in detail their shocking crimes. The killers' pursuit of horror and violence is described through the unique audiotape and videotape interviews which Berry-Dee conducted, deep inside the bowels of some of the world's toughest prisons.