Split 2: Cracks

Split 2: Cracks is a 2021 American horror/thriller/action film produced by M. Night Shyamalan and Jason Blum, and written and directed by M. Night Shyamalan, and is a sequel to the 2017 film Split and a spinoff of the 2019 film Glass. The film is produced by Blinding Edge Pictures and Blumhouse Productions, and is distributed by Universal Pictures.

Synopsis
After the deaths of David Dunn, Elijah Price, and Kevin W. Crumb during the events of Glass, Casey Cooke becomes depressed and runs away from her family until she receives multiple personality disorder, just like what Kevin has, and plots to kill the people who turned against Kevin.