Cast
Boris Livanov
Dick Arrowsmith
N. Golitsyna
Ethel
Maksim Shtraukh
Samuel Wolfe
Boris Svetlov
Layons
Sergey Tikhonravov
Garreth
Viktor Stanitsyn
Bill Steer
Andrei Abrikosov
Engineer Nikitin
Sergei Tsenin
Sazonov
Aleksey Dolinin
Gaydar
Dmitriy Kara-Dmitriev
Bistayev
Vera Maretskaya
Comrade Olga
Vladimir Uralskiy
Gostev
Leonid Kulakov
Rakitin
Oswald Glazunov
Rector (uncredited)
Ivan Lavrov
Professor (uncredited)
Lyudmila Glazova
Felice (uncredited)
Marta Aleschenko
John's wife
Timofey Remizov
Laboratory worker (uncredited)
Eva Milyutina
Arrowsmith's guest
Ivan Chuvelyov
Arrowsmith's guest
Leonid Obolensky
The reporter (uncredited)
Weyland Rodd Sr.
The worker (uncredited)