The Only Room On The Set Of The Exorcist That Wasn't Destroyed

After a pigeon flew into a circuit box and caused a fire on the set of "The Exorcist," the sets of the MacNeil family's house burned down. Only one room survived the unexpected fire: the room of Regan MacNeil (Linda Blair).

Ironically, this room is where the majority of the film's scares occur. From the possessed little girl spewing pea-green vomit to her ungodly acts with a crucifix to her explosive exorcism, that bedroom saw all sorts of horrors. "Interestingly, (the fire) was while we were shooting the exorcism scene," Friedkin recalled 45 years after the incident (via the Oscars YouTube channel).

"That's the only thing that happened during the entire film that I thought was some kind of bad karma," the director said.

The incident caused a six-week production delay, after which a priest was brought in to pray over the set (via The Sun). While the cursed energy behind the scenes was a nightmare for everyone involved, it helped create an aura of pure terror around the film that carries on today.