Arinka, a young girl who lives near the railroad, discovers a ring of spies who are preparing the terror act.
Larisa Yemelyantseva
Arinka
Pavel Sukhanov
Mariya Barabanova
Sergei Filippov
Nikolai Konovalov
Georgy Orlov
Railroad master
Nikolay Urvantsov
Cashier
Aleksei Matov
Friend of Stepan Stepanovich
Aleksandr Kulakov
Machinist Vasiliy Sergeyev
