He was watching TV. Out of the corner of his eye, he saw something. It was a shadow. It seemed to be on the floor. He turned his head to get a better look. Whatever it was, it wasn't there anymore. Over the next few months, he saw the shadow several more times. It was always out of the corner of his eye. He visited an eye doctor. The doctor examined him. He said, "There's nothing wrong with your eyes. Maybe it's just your imagination." He figured the doctor was right. He went home. He was changing channels on his TV. He saw the shadow again. He turned his head quickly. It looked like something went under the bed. He looked under the bed. He realized that it hadn't been his imagination at all. The shadow was real. Standing there motionless—was it looking at him?—was a big cockroach.