This was strange. I was just going to post my girlfriend just found out that Poltergeist star Heather O'Rourke died at the age of 12 from complications of Crohn's disease. We were watching the movie together when she asked whatever happened to her.
While setting up this post, I JUST found out the older sister in Poltergeist, played by Dominique Dunne, was murdered the same year of the movie's release in 1982. She was strangled by her boyfriend and died at the age of 23. The murderer even got off on manslaughter and only did a little bit less than four years in prison.