The Wenceslas Men
An isolated apartment sitter sees apparitions of mysterious beings.
"And then, after a few days, I returned to the living room, to sit in the blank and quiet night and watch them pass in darkness. And after a few more nights, I crept closer to the curtains. One night, having left them closed, I peeled one back as the last of them passed. I watched them proceed down the street in their own strange strides, walking steadily, not turning a corner, not entering some structure, not vanishing in mid-air."