find out what they are afraid of and take it 10 levels higher
That would be awful!! (If you're the one being scared)the phone rings, breathing, must be a wrong number. a noise at the back door, must just be the wind. scratching at the window, must just be a tree branch. foot steps creaking upstairs, just the house setttling. lights go out, a blown fuse. with a friend you could really creep someone out.