The plot is based on genuine events: a tendency to abandon subversive activities and surrender of one of the leaders of the Ukrainian counter-revolutionary underground, coroner general Y. Tyutyunnik. The young Chekist Sashko Kovalchuk infiltrates the Kiev counter-revolutionary underground.
Aleksandr Solovyov
Ivan Mykolaichuk
Kostiantyn Stepankov
Volodymyr Volkov
Olga Kuznetsova
