The shadow walked out from the room on the third floor. He spotted a glass marble sliding down the steps. He followed it and came to the ground floor. There was no one around. The shadow carried on alone. He saw the marble enter the toilet and stop before the cubicle. The clock for midnight stopped chiming. The shadow moved to the cubicle. He bent down to pick up the marble but noticed that the door of the cubicle was not closed tightly.
