December 03, 2020 Insidious 4: The Last Key - Let Me Explain December 03, 2020/ Let Me Explain Insidious 4: The Last Key Synopsis: Parapsychologist Dr. Elise Rainier faces her most fearsome and personal haunting yet - in her own family home.Director: Adam Robitel Writers: James Wan (based on characters created by), Leigh Whannell Stars: Lin Shaye, Leigh Whannell, Angus Sampson PHOTO - UNIVERSAL PICTURES