Split is a 2016 American psychological horror thriller film and the second installment in the Unbreakable trilogy written, directed, and produced by M. Night Shyamalan and starring James McAvoy, Anya Taylor-Joy, and Betty Buckley. The film follows a man with 23 different personalities who kidnaps and imprisons three teenage girls in an isolated underground facility.
Principal photography began on November 11, 2015, in Philadelphia, Pennsylvania. The film premiered at Fantastic Fest on September 26, 2016, and was released in the United States on January 20, 2017, by Universal Pictures. The film received generally positive reviews, with McAvoy's performance earning high praise and some critics labeling it a welcome return to form for Shyamalan, although some criticized the film for its perceived stigmatization of mental illness. The film grossed $278 million worldwide on a budget of $9 million.
The film is a standalone sequel to the 2000 film Unbreakable, which was also written, produced, and directed by Shyamalan. The film was not marketed as a sequel, instead saving the revelation for a scene featuring Bruce Willis reprising his Unbreakable role in an uncredited cameo. Split is noted as the first solo supervillain origin movie and Hollywood's first stealth sequel. It is also Shyamalan's first sequel. The final part of the trilogy, titled Glass, was released in January 2019, combining the casts and characters of both previous films.