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Toni Collette to co-star with Colin Firth in 'The Staircase'

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Toni Collette is set to star in HBO Max's "The Staircase." File Photo by Jim Ruymen/UPI
Toni Collette is set to star in HBO Max's "The Staircase." File Photo by Jim Ruymen/UPI | License Photo

April 30 (UPI) -- Knives Out, Unbelievable and United States of Tara actress Toni Collette has landed a lead role in The Staircase, an eight-part, fact-based drama for HBO Max.

The Emmy and Golden Globe winner will play Kathleen Peterson, a woman whose husband, Michael, killed her and staged it to look like an accident in 2001.

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Michael was convicted of murder, but the charge was later downgraded to manslaughter and he was released from prison in 2017.

Inspired by a docuseries and several books written about the case, the project will co-star The King's Speech and Supernova actor Colin Firth as Michael.

Antonio Campos is directing the series, which was written by Maggie Cohn.

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