Suddenly, you awaken. You are alone. A look at your clock reveals it is midnight--outside the window, the full moon is dark; a streetlight flickers and dies. You feel eyes on your back, and you realize that someone is in your room. There is a soft mumbling, words unintelligible, monstrous--like an inhuman throat is trying to produce human words. Turning slowly, you see a dark shadow in a corner, rocking itself back and forth. Back and forth.
Any attempt to illuminate the monster is thwarted; the darkness of its corner is impenetrable. No one answers your calls. When you speak to the figure, it doesn't answer, unless there's a slight alteration in the unintelligible mumbling.
Finally, when you approach the shadow-monster, it vanishes.
There is no trace it was ever there.
