Explaining Film on Instagram: "Split (2016) is a psychological horror-thriller written and directed by M. Night Shyamalan. It stars James McAvoy as Kevin, a man diagnosed with dissociative identity disorder who exhibits 23 distinct personalities while under the care of his psychiatrist, Dr. Fletcher (Betty Buckley). The story follows Kevin’s abduction of three teenage girls, led by the observant Casey (Anya Taylor-Joy), confining them in an underground facility. As his various personalities inte