Having said that, seeing Lin Shaye's unwavering faith that the Insidious franchise, which saw her character Elise Rainier etched into the minds of many a modern horror fan, could be returning could be a good sign. She was last seen in 2018’s Insidious: The Last Key. The film delved more into the backstory of Elise’s childhood, showing just how deep her connection with the world of The Further truly was. It was also the highest grossing film in the series, when accounting for worldwide grosses.