Stephen Long

Exposes criminals, opportunists and registered providers who have been busted exploiting loopholes to overcharge and defraud the NDIS.

The team revisit their investigation into the workings of the Murdoch-owned conservative news outlet Fox News, in the wake of the company's billion-dollar settlement with an election technology company.

In Darwin, the NT Government hire private security firms to patrol the streets and do the work that's usually done by the police.

Undercover operatives and secret informants have been crucial in the fight against organised crime. Reporter Mahmood Fazal dives deep to find out what happens to these people once the operations have finished and the criminals are behind bars.

Takes a look inside the Perth Mint's billion dollar scandal. Criminals have targeted Australia's largest government-owned gold refiner, trying to exploit weaknesses in its reporting systems to launder money.

Inside the hidden system locking people up indefinitely. Four Corners reveals allegations of the torture and mistreatment of people living with disabilities and mental illness who are locked up by the state.