The eight-episode series, from Christine director Antonio Campos and American Crime Story writer Maggie Cohn, explores the life of Michael Peterson (Firth), his sprawling North Carolina family and the suspicious death of his wife, Kathleen (Collette).
Schwarzenegger will play Todd Peterson, Michael Peterson’s (Firth) son.
The Staircase is written and executive produced by Campos and Cohn, who also serve as showrunners. HBO Max co-produces with Annapurna TV.
The series is based on Jean-Xavier de Lestrade’s docuseries and various books and reports on the case of Michael Peterson, who was convicted in 2003 of murdering Kathleen two years earlier. The charge was reduced to manslaughter in 2017, and Peterson subsequently was released from prison.