Uravnenie s neizvestnymi. Segodnya ty umryosh (2020 - 2021)

"Equation with Unknowns. Today You Will Die" is a detective series about Kira Uspenskaya, a school teacher who uses her mathematical gift to help the police solve particularly complex cases. This time, the owner of a construction company seeks the investigators' assistance. Among his usual morning correspondence, he receives a horrifying note with just one phrase: "Today you will die." Igor Boldin, nicknamed Maradona by his colleagues, takes on the case. But, as always, he won't be able to solve it without Kira's help.