Dasha Ignatieva desperately missed her husband, who had gone on a business trip, so she allowed herself to indulge in a bad habit and went out onto the balcony at night to smoke. On the street, she noticed a strange man hanging around cars, but did not attach any importance to it. And early in the morning an explosion thundered in the yard... Irina Sergeevna Snetko, who headed a department at the same scientific institute where Dasha worked, and her fiancé, the head of a thriving company, died. But which of them was the killer's main target? Now Dasha realized that it was no accident that the stranger was fiddling around near the car. And the worst thing is that he also noticed her and now he’s probably afraid that she might recognize him...