Emilia Clarke stars as Susan Smith. In 1988 Pikeville, Kentucky, Smith lived in a trailer park with her two children and drug dealer ex-husband, Cash (Johnny Knoxville). She was beaten regularly, addicted to cocaine, and a welfare cheat to support her family. Smith yearned for a better life, but could never escape the sinkhole of her surroundings. She and Cash hosted drug-fueled parties with local hooligans.
Jack Huston co-stars as Mark Putnam, a recently promoted FBI agent with a young wife (Sophie Lowe) and newborn daughter.