I, Tonya: The story behind the film

It was the scandal which rocked the Winter Olympics 24 years ago.

When U.S. gold medal hopeful Nancy Kerrigan was attacked by a masked stranger, her rival – and friend – Tonya Harding was implicated, and barred from skating.

But Harding’s life was far more complex than the cartoon-villain image that emerged.

We talked to the stars of a new film telling her story – Margot Robbie and Allison Janney – both Oscar nominated for their roles.