Boris Livanov
Dick Arrowsmith
Boris Svetlov
Layons
Maksim Shtraukh
Samuel Wolfe
Andrei Abrikosov
Engineer Nikitin
Sergei Tsenin
Sazonov
Viktor Stanitsyn
Bill Steer
Oswald Glazunov
Rector (uncredited)
Vera Maretskaya
Comrade Olga
Vladimir Uralskiy
Gostev
Dmitriy Kara-Dmitriev
Bistayev
Aleksey Dolinin
Gaydar
Sergey Tikhonravov
Garreth
Leonid Kulakov
Rakitin
N. Golitsyna
Ethel
