Pozdnyshev jealously escalates when he observes the intimacy that emerges between his wife and a violin player when they play the Kreutzer Sonata. When he is away on a business trip he is imagining that his wife is unfaithful and he travels home earlier and unexpected. And he gets mad when he notice that the violinist is visiting his wife... This story he told a passanger on the train...A well written story about love which turns to hate.