Keys from eternity. Kalinina N.

For a short time, Olga's friends from a speleaclub die each other. Olga believes that the curse hanging over their group is associated with the task received three months ago. The mysterious customer instructed to take out a box with an old key from the punch and put forward a strange condition that the group violated. Since then, every twenty -first day has been dying of someone from the team. The survivors decide to return to the place from which it all started. But they find that the inhabitants of the village, in which they stayed three months ago, disappeared somewhere. And strange things are happening around.