Under Investigation with Liz Hayes - Episode Guide

Two ageing lovers escaped to Victoria's remote High Country to conduct their secret affair – and have never been seen again.

Janine Vaughan was 31 when she was murdered after accepting a lift on a night out in 2001. Our panel uncovers shocking police lapses that may mask a cover-up, while previously unseen CCTV footage shows Janine's last known moments.

The world was told the coronavirus leaped from animals to humans at a market in China, but many scientists now fear it leaked from a lab. Experts reveal the new research techniques that put us all at risk.

Toddler Jaidyn Leskie was murdered in 1997 in a case that transfixed Australia. Our expert panel re-examines the evidence.

Russian President Vladimir Putin has unleashed chemical warfare on his opponents. Our panel reveals evidence that marks him as a terrorist who puts whole communities at risk in his quest for power.

Nearly 400 people lost their lives to a design flaw in Boeing's 737 Max that caused two crashes, but the aircraft is back in the skies and Australians could soon be stepping aboard.

Australia in the 1980's had arguably the most corrupt police in the world. This corruption went unchecked for years until Sallie-Anne Huckstepp blew the lid.

20 years on from September 11, Under Investigation brings together the Sydney man who survived the falling towers and the Australian Prime Minister who was in Washington.

It's one of the most baffling missing persons cases in recent memory. A young Belgian backpacker vanishes without in Byron Bay. Searching For Theo will rewrite everything we knew.

The brutal murder of 23-year-old Elizabeth 'Beth' Barnard in 1986 divided the close but secretive community of Victoria's Phillip Island. Experts re-examine the evidence and unravel what really happened that night.

A war table of experts forecast how Australia would participate and ultimately survive if a war comes to fruition between the two superpowers of China and the United States of America.

It's a death unlike any other. In 2010, 24-year-old Phoebe Handsjuk's body was discovered at the bottom of a garbage chute in a luxury Melbourne apartment complex, baffling her family and the nation.

"The Queen is dead, long live the King" will be the words echoed the instant Her Majesty Queen Elizabeth II passes. UI investigates The Crown in a post-Elizabeth world, examining whether the Commonwealth will remain intact, or if Australia will regather the reins of republicanism.

UFOs: a topic previously pushed into science fiction is suddenly being taken very seriously based on video authenticated by the US military. UI experts investigate the mystery of these unidentified objects.

Looks to crack the secrets held by this rugged and remote terrain, some of the most beautiful but potentially dangerous in the country.

Reinvestigates the baffling case of Melbourne's 'Mr Cruel' that involved a series of child abductions and murder during the late-1980s. The use of cutting-edge data mapping software reveals new clues in the active case.

This program investigates Australia's delicate dance with nuclear energy, which many experts say is the only way of surviving past fossil fuels into a carbon-free future.

Not since Adolf Hitler has the world feared a dictator like Vladimir Putin. Hitler's madness sparked a World War - could Putin do the same?

Under Investigation follows the trail of the "Coward Killer", John Wayne Glover, from the 1960's to his murder spree of elderly women in the 1980's.

As President Trump was the disruptor in chief in the Oval Office, he made his own rules and he left America, the world, and, at times, even his own staff shaking their heads in disbelief.

Liz Hayes and Under Investigation's formidable experts investigate the strange death of a top SA cop in 1981. Written off as suicide for decades, compelling new revelations point to a sinister plot to kill the decorated detective.

In the 1980s and '90s, Sydney's gay community fell victim to ruthless bashings by savage gangs. Now, the program can reveal the shocking and shameful role played by the NSW Police Force.

Pulls back the curtain on the city's dark underbelly as Sydney's gangland wars get bloodier, with over a dozen killings in 18 months.

Between 1970 and 2018, 11 people have vanished or been murdered along the Flinders Highway, including missing backpacker Tony Jones.

Travellers onboard cruise ships have seen violent crime, pollution, and now a COVID crisis. Liz Hayes and a panel of experts examine whether it has learnt from past lessons.

Nearly 50 years ago, 11-year-old Joanne Ratcliffe and 4-year-old Kirste Gordon were snatched from the Adelaide Oval. Groundbreaking new technology helps identify their kidnapper and reveal a shocking twist.

Uncover the terrifying abuse faced by young, vulnerable women at the hands of the Esther Foundation, a Perth cult once backed by some of the most powerful leaders in the country.

After government inspectors find a slug in a Melbourne catering company's factory, a public health warning erupts into a bitter David and Goliath brawl.

Ray and Jennie Kehlet set off for a prospecting trip to the WA outback in March 2015. Their adventure turned into a tragedy, with Ray killed and Jennie still missing. Under Investigation hears new evidence in this baffling mystery.

Australia's first celebrity chef, a star of radio and television, runs one of the country's most successful restaurants before he vanishes without a trace in 1976. Willi Koeppen's disappearance is one of Victoria's darkest mysteries.

One of the world's most unforgivable legal scandals. How South Australia's Chief Forensic Officer operated for decades with barely a qualification, giving evidence in 400 criminal cases that saw innocent people imprisoned.

Australia's most baffling maritime mystery, the 1988 disappearance of the Patanela just 10 miles off the coast of Sydney. No distress call. No debris. All four on board lost without a trace. What really happened to the Patanela?

He was brave enough to stand up to the mafia in a country town. But Don Mackay paid the ultimate price. His enemies weren't just mafia living by the creed: You speak, you die. He was also facing a political insider.

Four young police officers sent to a rural property are ambushed by violent extremists. They faced the siege at Wieambilla - the point when conspiracy became violence. How will Australian police deal with this new and growing threat?

When one of Australia's most senior police officers was killed in his own driveway they suspected a professional hit. Investigators jailed and then freed another man. So who killed Colin Winchester? Was it the mafia?

Richard Dorrough, ex-navy sailor, took his own life in 2014. He left behind a shocking note, claiming to have murdered three people. But with no names, dates or details, no one knew who the victims were...until now.

Liz Hayes and her team of investigators probe the mystery gripping Australia and the world. Three dead, another clinging to life, after a mushroom lunch in small-town Victoria.

Liz Hayes and her team of investigators assemble formerly top-secret diplomatic documents to expose what really happened to the Balibo Five, a team of Australian journalists executed in East Timor. Their deaths mark the beginning of a shameful government cover-up that continues tonight.

While searching for a snake in her garage, a devoted mother is fatally shot in the back by her husband. Liz Hayes and her team of experts examine the events surrounding that fateful night.

When a 12-year-old Queensland girl was brutally killed, her sister's boyfriend Graham Stafford was almost immediately convicted with her murder. Liz Hayes and her team of experts examine the flawed investigation and a shocking miscarriage of justice.

Sandrine Jourdan was a vivacious mother of three living in the small town of Caboolture until she mysteriously vanished in 2012. Liz Hayes and her team of experts raise serious doubts about the official narrative.

The disappearance of Ballarat woman Samantha Murphy has horrified Australia. In a special report, Liz Hayes and her team of experts take Under Investigation to the frontline of this baffling mystery.

Former WA cop Adrian Moore exploited his authority and the trust vested in police to manipulate, rape, and abuse thirteen women over a decade before being convicted on 87 charges in 2022. Liz Hayes and her team of experts ask how Moore got away with it for so long and examines whether a growing litany of police misconduct cases are isolated horrors, or emblematic of a nationwide crisis amongst those we should trust the most.

China's authoritarian government is quietly developing artificial intelligence designed to conquer and control its citizens. Now, the world's most powerful authoritarian state is directing its AI capability squarely at the West – and our living rooms. Liz Hayes and her team of experts investigate just how far China's silent invasion will go.

Supposedly safe in witness protection, Andrew Petrelis, the star witness in a $40 million dollar drug importation is instead found dead just before he's due to give his testimony. His death is deemed a tragic drug overdose, but Liz Hayes and her team of experts tear that theory apart.

The shooting of Kumanjayi Walker by former NT police officer Zachary Rolfe in 2019 sparked one of the most contentious and racially-charged criminal sagas in Australian history. But as Liz Hayes and her Under Investigation team of experts discover, at the core of this case is a heart-pounding mystery where the stakes were life or death.

Dawn breaks in the blissful Tasmanian coastal town of St. Helens, and the body of 15-year-old Eden Westbrook is found hanging from a tree in a public park. Liz Hayes and the Under Investigation panel discover serious flaws in the police investigation, with new witnesses painting a terrifying scenario of what befell this vivacious teen that night.

Liz Hayes and her panel reconstruct the bedroom where a 25-year-old model was brutally executed, in one of Australia's most shocking unsolved murders.