Anfisa got a job at a foundation that is preparing an expedition to a mysterious place of power in the North. Who would know what this would lead to! The manager's secretary is a small position; Anfisa is not privy to secrets and subtleties. But if you pay attention and don’t hesitate to eavesdrop on other people’s conversations, a smart girl can get a lot of interesting information, which is very expensive. Someone gives a lot of money for it, and someone pays with their lives... In the exciting action-packed dramas of Ekaterina Barsova from the series “Great Mysteries of the Past,” crimes that have thundered throughout the world, which still remain unsolved, resonate with modern times and find an unexpected continuation in present. The past returns and becomes the cause of a new crime.