— In the early morning hours of day 79, they will be awakened by the sound of someone slowly moving within the building. If they are upstairs, the sound is downstairs; if they are down, the sound is up. There is no sign of anyone actually making the quiet shuffling scraping sounds, and they stop when someone enters the room.

— Beginning late at night on day 79, the shuffling scraping movement begins again, moving from one room to another. It does not end when someone enters the room, though there is again no sign of who or what is making the sound. These sounds continue through to the early morning of day 80, where a scratching at the walls joins the chorus.

— In the middle of the night on day 80, the scraping and scratching begin again, slow and steady as the night goes on. It's not until the hour before dawn on day 81 that the sounds increase in speed and strength — they are soon accompanied by a sudden booming pounding on the walls of the building, jumping from one spot to another as if something is trying to find a way out... or a way in. The occurrence continues for 5 minutes before everything stops and silence fills the rooms.