— Beginning in the early morning of day 79, they will hear the occasional fluttering of paper, such as from the pages of a text or notebook. These sounds occur randomly in all rooms of the building, though there is no discernible source for them.

— Throughout the night of day 79, there will be more sporadic sounds, including the fluttering of paper but also the sudden thud of books hitting the floor. Sometimes there will be no book that has fallen, and other times it will be there on the floor with no sign of how it got there.

— Throughout the night of day 80, the previous nights' sounds continue, this time adding the squeak of chairs on floor and the scrape of desks being moved, again with either no sign of them being moved or the desk already being in another location.

— As night falls on day 81, the performance begins again with zeal. Books falls, chairs and desks scrape and topple, and papers are flung about the rooms, all of it visible and without any reasonable explanation. This almost violent event continues for three minutes until everything stops and the electricity within the building flickers and dies. (The electricity will return the following morning.)