An American Murder Mystery: The Staircase

Investigators discover novelist Michael Peterson clutching his dead wife Kathleen, in a pool of blood at the bottom of their back staircase. Michael insists that her death is the result of a tragic fall, but investigators believe otherwise

An American Murder Mystery: The Staircase is a 2018 crime documentary movie, starring Diane Dimond, Beth Karas, Candace Zamperini. It holds an IMDb rating of 7.4/10 from 3,076 votes and runs 42m.