An employee of a publishing house, Olga Petrovna Tumanova is passionate about detective novels and has a true vocation as an investigator.
She is not a professional, neither an official investigator nor an investigating judge, but she has her own way of searching for criminals: her own logic.
The morning after her retirement, Tumanova becomes a witness. Her neighbor, the businessman KORZOUN, is killed. The investigators have their version, but Olga Petrovna has her own version of this murder…
