HBO Max’s true crime series The Staircase begins streaming Thursday, May 5, bringing the Michael Peterson case back into the spotlight with Colin Firth and Toni Collette in the lead roles. The eight-episode limited series dramatizes the death of Kathleen Peterson, the criminal case that followed, and the family fracture at the center of one of true crime’s most debated stories.
The Staircase Series: What is The Staircase about?
The Staircase follows novelist Michael Peterson, played by Firth, after his wife Kathleen Peterson, played by Collette, is found dead at the bottom of a staircase in their North Carolina home. HBO Max describes the series as inspired by a true story and focused on Michael Peterson, his sprawling family, and the suspicious death that led to years of legal scrutiny.
The new drama arrives with built-in attention from viewers familiar with the earlier Staircase documentary, directed by Jean-Xavier de Lestrade. Netflix describes that documentary as covering Peterson, who was accused of killing Kathleen, and the 16-year judicial battle that followed.
Release plan and cast details
HBO Max is launching the limited series with three episodes on May 5, followed by one new episode each week through June 9. The release strategy gives the true crime series The Staircase a weekly rollout rather than dropping the entire season at once, giving audiences time to revisit the evidence, performances, and unanswered questions around the case.
Key details include:
- Premiere date: Thursday, May 5
- Format: Eight-episode limited series
- Initial release: First three episodes available at launch
- Weekly schedule: New episodes released through June 9
- Creator: Antonio Campos
- Main cast: Colin Firth as Michael Peterson and Toni Collette as Kathleen Peterson
- Supporting cast: Michael Stuhlbarg, Juliette Binoche, Dane DeHaan, Olivia DeJonge, Rosemarie DeWitt, Patrick Schwarzenegger, Sophie Turner, Odessa Young, and Parker Posey
The Staircase Series: The Michael Peterson case remains a true crime touchstone
The Michael Peterson case has remained prominent because it sits at the intersection of courtroom drama, forensic dispute, family testimony, media access, and public fascination with ambiguous evidence. Kathleen Peterson’s death in 2001 led to a murder charge against her husband, and the case continued for years through appeals and later legal proceedings.
In 2017, Peterson entered an Alford plea to a reduced manslaughter charge while maintaining his innocence, a development that further fueled public debate around the case. WRAL reported at the time that an Alford plea allows a defendant to maintain innocence while acknowledging that prosecutors have enough evidence for a conviction.
A dramatized return to a heavily documented story
For viewers who have watched the original Staircase documentary, HBO Max’s version offers a dramatized lens rather than a direct documentary retelling. The series is positioned to explore not only the death investigation and legal battle, but also the emotional strain on the Peterson family and the media machinery surrounding the case.
That distinction matters. The documentary became a defining title in modern true crime viewing, while the HBO Max series uses actors, scripted scenes, and narrative structure to revisit the same events. With Firth and Collette leading the cast, The Staircase enters a crowded true crime landscape with a story that many viewers already know — and still argue about.