There is nothing scarier about these movies than the fact that people actually believe them to be documentaries. It makes me want to make my own movie documentary, based on the real-life gruesome deaths and mutilations resulting from belief in superstitious and pseudoscientific nonsense. It'd be really educational.
I don't believe in such things, but...
A month ago I went to see the progress on a house I'm supplying barn wood for its remodel. The home will showcased on one of them ghost house shows (the main one). I've been in this home many times, even over a decade ago prior to the previous owner's death.
While standing at the front door (I entered via the back) speaking with the owner, the door opened on its own. I know as fact this door was locked, hence walking around the house to use the back door. The door seemed to be deadbolted, but couldn't tell due to the exterior framing, but the lack of any jiggle told me it was.
I paid it no mind when the door opened only a yard from where I was standing, blaming it on the wind in my mind, until I realized it was a calm day, I just tried opening that door 30 minutes prior, and the owner (a she) informs me he (the ghost) opens that door a lot.
Now, I'm no idiot, as you guys well know (insert smiley here). I walked over to the door to examine it. I also asked her if it was deadbolted and she said yes, and hadn't used that door since the day before. I observed that the deadbolt was retracted--not protruding.
I closed the door, then pulled on the handle. The door had a slight jiggle. I then engaged the deadbolt. The door was now much stiffer, as I recalled when I tried to open it from the outside. I went outside and jiggled the door with and without the deadbolt engaged. I 98.6% was certain that it was engaged when I first tried to use that door.
Back inside, I continued to study the problem. With the door closed, I jumped up and down in front of the door to see if the somehow the old house shifted the doorframe during such an activity, thus allowing the door latch to pull away from the frame. Nothing seemed to moved during that activity.
Conclusion: I have no fuckin' idea how that door opened on its own, whether it was deadbolted or not. The door and frame are in excellent working condition. It would take a big guy with megaforce to break down the door via a forced entry.
Any insight would be appreciated.