He woke up and saw the figure of a blue woman hovering in the bedroom. She was standing, but as he looked down to the side of the bed her feet were a couple of inches above the floor.
She had no facial features, like a mannequins dummy, blank faced, not even eyes. No mouth, no sound. He felt, somehow though, that she was looking at him? The angle of her head, tipped down and intent on where he lay. He noticed motes of dust in the sunbeam shining through the window. He could see them floating beyond the figure. It was dissolving as he watched.
Finally it faded, gradually, slowly, melting into nothing. No explanation, no reason, gone. All he felt was a wash of calm, not fear, and relieved that she was gone.