Plot summary

Libby Day (Theron) was only eight years old when her mother and two sisters were brutally murdered in their rural Kansas farmhouse. In court, she pointed the finger at her brother Ben (Sheridan), and her testimony put the troubled 16-year-old in prison for life. Twenty-five years later, Libby appears at a gathering of true-crime aficionados, led by Lyle Wirth (Hoult), and is shocked to learn most of them believe Ben is innocent and the real killer is still at large.