Decades of backroom deals between state governments and toll operators have left Australia's biggest cities with a network of private roads that are worsening the cost-of-living crisis. Pat McGrath investigates.

The season final for Four Corners is "Disconnected" reported by Louise Milligan.

After 20 years of unfettered growth, a realisation is dawning about the true cost of social media.

And it's the younger generations facing the brunt of the deadly consequences.

As Australia grapples with how to regulate social media, in the US, thousands of parents are taking up the fight to hold these hugely profitable tech giants accountable...through the courts.

In the last Four Corners episode of 2024, reporter Louise Milligan speaks to whistleblowers, one of the lawyers running the case, and a family devastated by the loss of their 18-year-old daughter.

As Meta introduces new protections for young people, insiders and families who've witnessed the most tragic consequences tell Four Corners enough is enough.