Sequel to the Insidious horror film series featuring the original cast of the Lambert family. The story revolves around the decision to open the red door and go deep into the Unknown Realm of Josh (Patrick Wilson) and Dalton (Ty Simpkins) - now adults - to once and for all destroy the demons that haunt them. my whole family. From there they have to face their family's dark and mysterious past, where the most horrifying hauntings are lurking. The original cast from Insidious returns including Patrick Wilson (who also directs), Ty Simpkins, Rose Byrne and Andrew Astor. Also starring Sinclair Daniel and Hiam Abbass. The film is produced by Jason Blum, Oren Peli, James Wan and Leigh Whannell. The script was written by Scott Teems based on a story by Leigh Whannell, and the characters were created by Leigh Whannell.