In 2003, writer Michael Peterson was convicted of murdering his wife Kathleen after she was found dead at the bottom of their staircase. The trial became widespread news and was the subject of a docuseries that made its way to Netflix. Over 20 years after Kathleen's death, the case is now coming to HBO Max as a limited series. Colin Firth and Toni Collette star as the seemingly happy North Carolina couple, while Sophie Turner portrays their adopted daughter. The Staircase will premiere on May 5, 2022.