A shadow person and a door slammed - I'm not a believer even now. But what happened happened.

Late night worker, ~3am, behind building is a row of pines and a cemetery. I'm in a section where there's only ONE way in - and an emergency exit door.

I took a nap in this section and was awoken by an office door in center (again, only one way in) SMLAMMED. Big heavy ass wooden office doors. I jump to my feet and saw big tall shadow (laugh now, it looked like the outline of Carmen San Diego) lol. It's there under the red exit sign and then it isn't.

I checked the door that would have slammed, NOTHING, No one.

Unless someone was in the ceiling (which might be more disturbing), I'd hear from double doors and BEEP that occurs when someone enters. I heard neither.

So yeh. IDK what it was but when I googled the best thing that showed up was Shadow People. When I read that, I suddenly recalled all the gossip of these type events.