Which film produced by Blumhouse Products stars Ethan Hawke, Lena Headey, Adelaide Kane and Max Burkholder?
Blumhouse Productions:  Blumhouse is mostly known for producing low-budget horror films, such as "Paranormal Activity", "Insidious", "The Purge", "Sinister", "The Gift", "Split" and "Get Out". The Purge:  The film stars Ethan Hawke, Lena Headey, Adelaide Kane and Max Burkholder as a family held hostage during "The Purge," which is a 12-hour time period where all illegal acts are de-criminalized.
The Purge