You recalled falling asleep, tired and ready to rest after a long day. The last thing you remember was soft moonlight and a gentle breeze wafting through the window into your room. Yet when you awake, you find yourself in an unfamiliar place. Gone are the windows, replaced instead by warm-tinted ceiling lights. The room looks like a regular bedroom, but there's a sense that something is missing. A few minutes after waking, you hear footsteps approaching the room, and you sit up, alert.