It's that time of year, before we start watching "Elf" and "A Christmas Story," where we turn off all the lights and force ourselves to watch movies that make our blood run cold and our hairs stand on end.
And, sure, movies like "Saw" and "The Babadook" scare us s---less, but the bad guys in those films aren't real. At least they better not be.
It's the horror films based on (sometimes supposed) real events that really unnerve us... that could actually get under our skin. It's four little words that remind us that what we're about to see actually happened to someone. And, that something like that could maybe happen to us.
We compiled the 10 scariest films and give you the quick story behind them. A couple of them are quite famous.
"The Exorcist" was based on the supposed demonic possession of real life boy, Roland Doe, in 1949.
And "The Amityville Horror" was based on reported supernatural events in a home in Amityville, New York, in 1975. It's pretty hard to prove reports of demonic possession and hauntings, but what's not difficult is to prove the work of a convicted serial killer.
That's a young Jeremy Renner playing killer/cannibal Jeffrey Dahmer, who murdered 17 men over the course of 15 years, in "Dahmer." It's these hyper-real films that can really cut you to the core.
But, if all this realness has you too spooked yet you're still in the Halloween spirit, here are all our Halloween stories.
And, because we know you share our excitement for "Stranger Things 2," check these out, too:
Excited for the Stranger Things 2 premiere? Us, too!
Look at these amazing Stranger Things 2 80's inspired posters
Here's the final trailer for Stranger Things 2