I haven't had many supernatural experiences, though I do believe in the unknown. This one could've been coincidence, then again maybe it wasn't.
I live in a three-story house in the suburbs. The top floor was an attic that was used as a bedroom which also had a compartment for storage. My sister, who slept in the attic passed away a few years back.
One night I went up to the attic to get bags( we were going on holidays the next morning). The storage room has a very low ceiling so you have to squat down to get inside. It's lit by one light bulb.
When I went into the room I had to go in quite far to reach the bags. Once I was halfway in, the door shut behind me.
I assumed my brother had shut the door to freak me out, so I went to push it open, but it wouldn't move.
I remember there wasn't even any give in the door, rock solid. I started to get kinda nervous. Then the bulb went out and I was left in darkness. I was really scared because the whole time I didn't feel alone.
Eventually I forced open the door and got out. I asked my brother to go in and get the bags instead.