The second season explores the aftermath of both Avery’s and Dassey’s convictions, focusing on Avery’s and Dassey’s families, the investigation and findings of Avery’s new attorney Kathleen Zellner, which corroborates the thesis of Avery’s innocence and him being framed for the murder of Halbach, and Dassey’s legal team’s efforts in arguing in court that his confession was coerced by prosecutors and his constitutional rights were violated.