Most people have, at some point, seen something vaguely person-shaped lurking in the dark. Perhaps it’s just a shirt hung on the back of a door or a stuffed animal propped up in the corner.

Shadow People and The Hat Man | Who are they? What do they want? Here's how it happens. You're drifting off to sleep; or maybe you wake up in the middle of the night. You feel a presence in the room.