The brutal ax-murder of Andrew and Abby Borden leaves little evidence and many unanswered questions. While neighbors struggle to understand why anyone would want to harm the respected Bordens, those close to the family have a different tale to tell --- of a father with an explosive temper; a spiteful stepmother; and two spinster sisters, with a bond even stronger than blood, desperate for their independence. As the police search for clues, Emma comforts an increasingly distraught Lizzie, whose memories of that morning flash in scattered fragments. Shifting among the perspectives of the unreliable Lizzie, her older sister Emma, the housemaid Bridget, and the enigmatic stranger Benjamin, the events of that fateful day are slowly revealed.