Guardian Australia senior correspondent Sarah Martin joins Jess Lilley and Rachel Withers on Spin Cycle to unpack The Populist: Pauline Hanson’s Divided Nation. Sarah reflects on how a tip-off about Gina Rinehart’s undisclosed patronage set off two years of digging into Hanson.

Sarah shares what it's like to investigate One Nation in real time, including becoming part of the story herself after asking Hanson about taxpayer-funded nepotism at the National Press Club.

She examines the challenge of political accountability in Australia, asking why facts struggle to break through, and whether Australian populism is cultivating an invulnerability.