This article contains spoilers for Insidious: The Red Door. If you've yet to watch the movie, and don't want to know how it ends, turn back now.
Despite being killed off in the very first instalment, Lin Shaye's medium Elise Rainier has popped up in every Insidious sequel since; in flashbacks, prequel sequences, and, well, the afterlife. While her screen-time varies vastly between films, her role is always important, whether she's the main character – like in Insidious: The Last Key – or simply helping the franchise's various protagonists navigate terrifying hauntings and possessions.
