A new case for the brilliant amateur detective Nadezhda Lebedeva! What should a former researcher turned housewife do? To go, for example, to the province to visit an old friend... is it really bad? Badly. Because on the way back, the train stops in the middle of the night at a secluded stop, and Nadezhda sees her elegant neighbor in the compartment looking in horror, as if she had seen a ghost, at a simple village woman selling milk. And then... in her nerves after a night meeting, a fellow traveler confused Nadezhda’s cosmetic bags with Nadezhda’s, and when the next day Nadezhda wanted to make the reverse exchange, she found her former fellow traveler murdered, and above her a frantically screaming woman, whom she recognized as the very same merchant from the stop. Is it really Nadezhda will not try to find out what is behind all this?