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.
| Production | Mikhail Byaly | Producer |
| Sound | Maksim Dunaevskiy | Music |
| Camera | Volodymyr Pankov | Camera Operator |
| Directing | Aleksandr Pavlovskiy | Director |
| Writing | Borys Kryzhanivskyi | Writer |
| Writing | Evgeniy Sherstobitov | Writer |