Zatonksk is a quiet provincial town. But in the summer of 1888, the familiar way of life is shattered: a metropolitan investigator, Yakov Stolman, arrives, and the young Anna Mironova realizes that her troubling gift of seeing the dead can help uncover the truth hidden in the darkness. Stolman relies on logic and the achievements of science, while Anna learns to trust clues and the whispers of ghosts. Together, they will have to unravel a chain of strange deaths—from a case involving drowned women to a fateful duel, where the line between life and death becomes disturbingly thin.