As a child, Libby Day witnessed the murder of her mother and two older sisters by her brother, Ben. Her testimony sealed his fate and sent him to prison. Now in her 30s, Libby leads a solitary life. However, with her funds running out, she needs to get a job. Approached by a group who call themselves the Kill Club, she's offered payment for interviewing her brother, whom they believe is innocent of the murders. Before long, even she doubts what she...