The heroes within all of those films were a group of
ghost hunting demonologists led by psychic Elise Rainier (Lin Shaye, «Ouija») and accompanied by tech
specialists Specs (Whannell, «The Bye Bye Man») and Tucker (Angus Sampson, «Mad Max: Fury Road») who managed to bring the right spirits back and send the evil spirits away from the Lambert family on more than one occasion.