Dark Places (2015)

Theron fronts 'Dark Places' as Libby Day, a woman who holds deep emotional and physical scars from a harrowing childhood trauma. When she was just seven years old, her mother and two sisters were murdered in their home. Only she and her fifteen-year-old brother Ben survived. Suspicion naturally fell to her brother, who was a loner with a bad reputation. Libby, who'd lost some of her fingers and toes in making her escape, testified against her brother, who for twenty-five years has been locked away and out of touch. Libby would let sleeping dogs lie if it weren't for a desperate need for cash that urges her to investigate her own past to appease a hobbyist group of investigators who call themselves The Kill Club, who believe Ben was falsely convicted. With their significant support, Libby digs back into her past and tries to understand who her mother was, what her brother was going through, and how these fragile bonds led to a murder so heinous it was called 'The Satan Sacrifice of Kinnakee, Kansas.'