About the show
Based on a true story, THE STAIRCASE explores the life of Michael Peterson (Colin Firth), his sprawling North Carolina family, and the suspicious death of his wife, Kathleen Peterson (Toni Collette).
Starring alongside Colin Firth and Toni Collette are Michael Stuhlbarg, Juliette Binoche, Dane DeHaan, Olivia DeJonge, Rosemarie DeWitt, Tim Guinee, Patrick Schwarzenegger, Sophie Turner, Vincent Vermignon, Odessa Young, and Parker Posey.
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