As Australia signs a landmark deal to bolster its alliance with Washington, we're selling China the critical minerals it needs to build hypersonic missiles and nuclear technology. (Final for 2025)

In a powerful follow up to her Logie-winning investigation, Adele Ferguson returns with a searing expose that reveals the true scale of sexual abuse in Australia's childcare sector. Despite government promises of reform, we uncover more than 100 cases of alleged paedophiles who worked or are working in child care, enabled by systemic failures, weak oversight and a profit-driven industry.

The dark world of online sextortion targeting teenage boys on social media. With unprecedented access to police and tech experts, to examine how these networks operate, their motivations, and the true devastation they cause.

Donald Trump has long boasted of his wealth, is he now using his office to enrich himself and his family? John Lyons examines how a vast network of foreign deals, hotels and cryptocurrency have opened Trump up to accusations of profiting from the presidency, and conflicts of interest.

Online bookmakers have kept millions in wagers placed with stolen money. Why has the federal government failed to respond to a cross parliamentary blueprint for reform and what will it take to curb the harms of gambling?

In Dec 2024 the world saw the dramatic fall of Syrian dictator Bashar al-Assad, ending a 13-year civil war. But behind the celebrations is a grim legacy, over 100,000 Syrians disappeared and more than a million imprisoned.

Former members of the secretive, ultra-wealthy church once known as the Exclusive Brethren speak about the psychological manipulation, surveillance and attempts to intimidate; plus growing influence in business and politics.

The race is on to find the minerals needed to enable the world's transition to clean energy and vast reserves of those minerals lie at the bottom of the Pacific. But scientists warn it risks catastrophic damage to our oceans.

More than $100 million has vanished in a financial scandal at the heart of the federal government's disability housing program. How a once-in-a-generation reform has been left vulnerable to fraud, waste and systemic failure.

A growing anti-government movement in Australia is challenging the authority of the courts, councils and cops. Supercharged during the COVID lockdowns, some call themselves sovereign citizens, others freedom fighters.

Who really wins in a class action? Anne Connolly reveals how some class actions have become a brazen money-making exercise for lawyers and litigation funders, leaving people feeling sidelined, short-changed and exploited.

The Australian Taxation Office holds extraordinary power, but who's keeping it in check? A major Four Corners investigation reveals how inaction and flawed systems have allowed more than $50 billion in tax to go uncollected.

For years, a star neurosurgeon operated inside Australia's hospital system despite repeated allegations of sexist and inappropriate behaviour, and a string of legal claims by devastated patients. This is the hidden story of the toxic culture that enabled him.

Australians in their 30s and 40s are facing an alarming surge in cancer diagnoses and researchers are scrambling to understand why. From bowel and breast to liver and kidney, aggressive cancers are hitting younger people; they're often detected late, with devastating outcomes. Dr Norman Swan investigates what's behind the change.

A week before the 90 day pause expires on Trump's so-called reciprocal tariffs, we examine the chaos, confusion, uncertainty and fear generated by his whiplash-inducing tariffs, policies that experts say will increase the cost of living, make the US poorer and the world a less prosperous and secure place.

As the US launches a review into AUKUS, Four Corners examines the future of the $368 billion submarine deal. Mark Willacy speaks with key players inside the US Congress and the defence community, as senior UK figures warn of cost blowouts and delays.

Australian mixed martial arts say they were pushed to their physical and financial limits while the UFC made over a billion dollars in revenue. Former fighters describe a culture of exploitation, secrecy, and lasting damage.

Doctors and frontline health workers warn they are witnessing the collapse of public mental health care in NSW. Staff say they're being forced to release people who are still seriously unwell because there aren't enough beds.

Can the Liberal Party ever recover from its historic election loss? With the Nationals walking away from the Coalition, the Liberals face the very real prospect that they may never govern again. Patricia Karvelas talks to Liberal insiders as they grapple with the existential crisis of what the Liberal Party stands for and who it represents.

Bunnings has become one of Australia's most dominant and profitable retailers. Critics say it's a corporate predator systematically picking off independents, shutting down competition and abusing its dominance with suppliers.

Over summer, organised crime cast a terrifying shadow over Australia. The Jewish community in Sydney was left reeling - shaken by a wave of attacks. Now the caravan plot "mastermind" speaks for the first time.

Beyond the campaign slogans, who has what it takes to lead the country? Louise Milligan examines the character, track record, and campaign strategies of the two men vying for power - Anthony Albanese and Peter Dutton.

In an extraordinary Four Corners exclusive, a former ASIO agent reveals to investigative reporter Sean Rubinsztein-Dunlop how a resurgent Islamic State network is radicalising Australian teens and plotting violence.

A decade-long investigation has uncovered explosive new evidence suggesting that corrupt former NSW Crime Commission assistant director Mark Standen’s criminality was far more extensive than the public was led to believe.

Australia's first ever truth-telling commission uncovers our hidden history. Bridget Brennan examines how we as a nation reckon with our colonial past and take critical steps towards truth, healing and justice.

A one-hour special reveals deep failures and systemic issues in Australia's childcare sector. Adele Ferguson uncovers shocking cases of child abuse, neglect and injury highlighting gaps in childcare safety and accountability.

Four Corners reveals how the Australian War Memorial is increasingly entwined with the global arms industry - raising troubling questions about conflicts of interest, corporate influence and the future of the memorial itself.

Four Corners investigative journalist Dan Oakes uncovers the secrets of Australia's black-market tobacco trade, where arson attacks, extortion, and deadly feuds are used to control the illegal cigarette market.

Families call on governments to act as loved ones fall into extremism. Reporter Avani Dias investigates the growing threat of homegrown extremism, the painful reality of radicalisation and desperate calls for stronger action.

With Donald Trump vowing to end the brutal war in Ukraine, Four Corners travels to the front line to investigate: Is peace even possible? As the war's third anniversary looms, Mark Willacy reports from the battlefield. This program contains coarse language and graphic footage of people being killed and injured in war.

As a federal election looms, Four Corners returns for 2025 with reporter Angus Grigg examining whether our two-party system is collapsing. Independents and minor parties are set to capture more than a third of the vote and become the king makers in the new parliament. In a cost-of-living election, Prime Minister Anthony Albanese has plenty to worry about.