Based on a true story that spanned more than 30 years in which a young man was charged and convicted of brutally murdering his mother. Each episode is structured around an interrogation taken directly from the real police case files, with the goal of turning the viewer into a detective.

New Mexico Territory, 1880. Rio Cutler and his older sister Sara must abandon their home after an unfortunate event happens. In their desperate flee to Santa Fe, they cross paths with the infamous outlaw Billy the Kid and his gang, who are ruthlessly pursued by a posse led by Sheriff Pat Garret.