The Haunted School

You lean against the door, listening intently. You hear nothing. Summoning up your courage, you brace yourself and fling the door open. In the dim light from the hall way, the room appears empty. You see your phone lying on the floor at the edge of the light. Reaching around on the wall, you find the light switch and flick it. Miraculously, the lights come on. The room is indeed empty. Walking quickly across the room, you stoop to grab your phone and retreat from the bathroom.