James McAvoy stars in this psychological thriller written and directed by M. Night Shyamalan. After being kidnapped by Kevin (McAvoy), a man with 23 different personalities, teenager Casey (Anya Taylor-Joy) and her two friends find themselves being held captive in the basement of Kevin's house. The girls meet each of his personalities, ranging from a mischievous nine-year old boy named Hedwig to a sophisticated older woman. However, as the girls desperately look for a way to escape, Kevin's final submerged personality the others name 'The Beast' begins to emerge, which threatens to dominate the others and leaves Casey and her friends in grave danger. The cast also includes Betty Buckley, Kim Director and Jessica Sula.