Talented mathematician Anna Nikolaevna Shvabrina works as a school teacher. By the will of fate, she begins to help Captain Vershinin investigate complex crimes using mathematical methods. The main tools of the investigator are many years of experience and the basics of forensic science, Anna Nikolaevna is an impeccable knowledge of mathematical methods, formulas and models. It would seem that they are completely different, but it is thanks to this union that it will be possible to investigate the most difficult cases.

Aleksandra Rebenokas Швабра
Anton Batyrevas Nikolay Vershinin
Hanna Kuzinaas Katya Sosnovskaya
Ivan Tamashevas Vitya Vershinin
Nikolay Boklanas Deputy
Aleksandr Kryzhanivsjkyjas Boris Sosnovsky
Oleksandr Rudkoas Mitya Goncharenko
Olga Radchukas Svetlana Zynina
Sergey Siplivyyas Pavel Zurabov
Liudmyla Zahorskaas Inna