Read these at your peril.
SLM Production Group / Jo Barrow / BuzzFeed
1) Star Heather O'Rourke died aged 12 from complications following flu-like symptoms.
2) It was reported that actor Will Sampson, who starred in Poltergeist II, performed an exorcism of the set after so much bad luck. He died a year after the film was released.
3) Dominique Dunne, who played the older sister, was killed by her boyfriend just before the second film went into production.
20th Century Fox / fanpop.com
4) An animal handler helped to organise the shoot with the frenzied baboon, and the day after they filmed he was killed by a tiger.
5) Shortly after the film was released, the special effects director was involved in a car crash which killed his girlfriend. She was decapitated in a way that was identical to a death in the film.
6) Allegedly, a sign by the wreckage read Ommen 66km. The creepiest thing? It all happened on Friday 13 August, 1976.