About the book: 2010 / 20 years ago, a terrible tragedy caused an irreversible reaction of decomposition. The complex substance of the company broke down into simple substances - three frightened living boys and two living girls, and one dead one who did not have time to be afraid. Many years later, they decide to open the door to the past, wander through its narrow corridors and explain the mystery of the death of the third girl - after all, this is their common secret.