The wife of a large businessman, Alla Korol’kova, is found on the outskirts of the city with many stab wounds, from which she dies. The killer took neither money nor jewelry. The main clue is a light-colored hair found on the body of a dark-haired victim. Private detective Tatyana Ivanova had never known Korol’kova. So why, then, is there a scrap of paper in the dead woman’s pocket, with Tatyana’s address written in ink, address and all? The famous sleuth is seriously alarmed—and is drawn into the investigation almost against her will.