This story took place when I was about 14. I'm 22 now and the memory still scares the crap out of me. My friend had a huge slumber party for her birthday. Her house was very old and was rumored to once be part of the underground railroad. Her attic was a series of rooms that mirrored here downstairs except for one that had a whole cut out of the floor. It looked like a tunnel led from it and went about 3 feet back before it was blocked off with rubble and bricks. She would always tell us stories of weird stuff that happened in her house. Her room had the stairs to the attic attached to it and she would hear sounds coming from up there like people walking around and once her electric keyboard that was up there went off on its own. It was playing "Oh Susanna" on repeat which is kind of strange because here name is Susan.
We, being a bunch of teenage girls, decided to play that silly game "Light As A Feather, Stiff As A Board". We were all sitting around in a circle with candles concentrating on getting this girl to float when the stuff hit the fan so to speak. All at once the room we were in dropped in temperature and the candles all flicked at once, like there was a breeze in the room which there wasn't. We all screamed and jumped up. We all piled on her couch (there were at least 10 of us so you can imagine.)
That's when we heard a loud boom come from the coat closet / entryway connected to the room we were sitting in. Almost at the same second a dark shadow ran around the wrap around porch. We watched it move through the windows and at one point it passed right by where we were all sitting. We didn't hear the sound of anyone running though which was odd. It stopped at the front door and that's when we realized that the door wasn't locked. Not that it would have really mattered.
But still I decided to be the brave one of the ones on top of the pile of girls and jumped up and ran and locked the door. When I did this I could clearly see out the window and no one was there, human at least. I flicked on the lights on the way back to the couch and slowly we got our nerves back. Eventually we opened the door the the coat room / entry way and saw that her coat wrack had been knocked over by something. None of us slept that night and needless to say I never spent the night at her house again.