Unusual shadow

I was sitting in my room, the light from the window falling on the floor and my shadow stretching across the wall. A completely normal thing. At least that's what I thought. Until... HE MOVED. Not me. My shadow. I blinked. Maybe I was thinking. But when I raised my hand - my shadow didn't do the same. He... STOOD MOTIONLESS. My heart began to beat faster. I slowly raised my other hand. The shadow did not move. And then... took a step forward. And then another. He separated himself from me. I stood stunned, watching my own shadow move around the room as if it were someone else entirely. And then he turned his head And looked at me. And then... he disappeared. But I felt that he had not gone far away at all.