Insidious: The Last Key is an upcoming American supernatural horror film directed by Adam Robitel and written by Leigh Whannell. It is the fourth installment in the Insidious franchise, and the second chronologically following 2015's Insidious: Chapter 3. The film stars Lin Shaye, Leigh Whannell, Angus Sampson, Spencer Locke, Kirk Acevedo and Bruce Davison.