Four Corners returns with an incisive exploration of how President Trump will wield power. Reporter Michael Brissenden interviews key players in the Trump camp & Republicans on the political earthquake rippling across the US.

How Australians are spending billions on unproven vitamins & supplements. With 7 out of 10 Australians taking a complementary medicine, Four Corners looks at the regulation & marketing of these products.

A Report from the Frontlines in the Battle Against the Islamic State. As the war against IS intensifies, Matt Brown reports from the frontlines of Mosul - the biggest urban battle since World War II.

What happens to the plastic we throw away? A report on how our rubbish ends up in the ocean and the damage it causes.

The Crown empire have bet big for years on China. Four Corners investigates what went wrong for James Packer's gambling & entertainment operations in China & what this might mean for its Australian business.

Can President Trump keep his promise to make America Great Again? Four Corners meets the human face of America's working poor as they struggle to feed their families.

Four Corners brings you the views of distinguished former members of the US military and senior policy makers who warn that climate change is not only real, it's a threat to global security.

The mothers and carers battling for justice and protection for their disabled children.

Four Corners reporter Caro Meldrum-Hanna reveals the brutal backroom politics ripping into Pauline Hanson's One Nation party.

Cracking the Code: What Facebook really knows about you. How one of the world's most powerful corporations is turning our lives and our data into vast profits, in ways we have no control over.

This powerful film shines a light on the barbarism of the Syrian regime at a time when the future of President Assad is being argued over by the world's most powerful nations.

After the Game: Elite athletes blow the whistle on the high price paid for sporting glory.

Four Corners investigates how a nation as rich as Australia is in coal, gas, sunshine and wind, could find itself in an energy crisis.

It was one of the biggest illegal firearms busts in Australian history. A criminal syndicate brazenly smuggling weapons into the country exposing the failings in the nation's border security. Ben Knight reports.

A 2-part investigation into the Lindt Cafe siege. Sarah Ferguson talks exclusively with families of Tori Johnson & Katrina Dawson about their experience on the day & their devastation, anger & frustrations in the aftermath.

Part Two takes you inside the Lindt Cafe & the police operation on the day, with a forensic examination of how the disaster unfolded. We expose what went wrong & ask whether Australia is prepared for another terror attack.

An investigation uncovering how China's Communist Party is infiltrating Australia, tracking the activities of Beijing-backed organisations and the efforts made to intimidate CCP opponents.

The brave few who blew the whistle on Australia's most corrupt police force.

With the rise of social media and smartphones in virtually every pocket, internet trolls are only ever a click, tap or swipe away. Four Corners takes you into the dark side of the internet.

The retirement villages ripping off retirees. Adele Ferguson investigates.

This Four Corners investigation will reveal how Donald Trump was negotiating luxury resort deals in Bali and Java, raising serious questions about Presidential conflicts of interest.

A story of identity, love and dignity, introducing three families who tell their stories about living with dementia.

In Philadelphia in the early 2000s, a team of lawyers embarked on an investigation led by a formidable District Attorney. What they uncovered was one of the worst criminal cover-ups in US history.

Stretching from Qld to SA, billions of dollars in taxpayer's money has been poured into rescuing the rivers & streams of the Murray-Darling Basin. Linton Besser investigates where the money, & the water is going.

The digital age has revolutionised the way we live our lives. With the technology of smartphones governments have been given the ability to spy on their citizens on an astonishing scale. Nawal Al-Maghafi reports.