HBO Max's The Staircase explores the true story of the death of Kathleen Peterson and her husband Michael's subsequent trial and murder conviction. The series' star-studded cast features Colin Firth, Toni Collette, Patrick Schwarzenegger, and Sophie Turner, as well as Outer Banks' Cullen Moss, who portrays District Attorney Jim Hardin.
Hardin worked alongside Assistant DA Freda Black, played by Parker Posey, as part of the prosecution in Michael's trial in 2003. Created by Antonio Campos and Maggie Cohn, The Staircase received a pair of Emmy nominations, as Firth and Collette were tabbed in the categories for Outstanding Lead Actor and Actress in a Limited or Anthology Series or Movie.
Related: How Much HBO Max Changed Of The Staircase's True Story
Screen Rant spoke with Moss about his experience playing Jim Hardin in The Staircase.
Screen Rant: Congratulations on The Staircase. Have you had the chance to sit down and watch the whole thing yet?
Cullen Moss: I am embarrassed to say that I still have an episode to go on it. But I've watched almost all of it. I couldn't be happier with how it turned out. Antonio, and Maggie, and everybody involved, they just really made something cool.
How did you prepare for your role as the DA Jim Hardin? What kind of research was involved?
Cullen Moss: I just watched a lot of the old Perry Mason show. I'm kidding. I didn't. But I did growing up. I watched the documentary. I watched hours and hours of Court TV, especially all of Jim and Freda's, the testimony where they were questioning. I watched interviews with Jim Hardin, read up about him. I read up on the case and then Parker and I got to have almost a two-hour Zoom call with Jim where we got to talk about the culture in the DA's
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