Discover
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
Ivan Lavrov
Professor (uncredited)
Lyudmila Glazova
Felice (uncredited)
Marta Aleshchenko
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)
Eduard Gunn
The provocator (uncredited)
Art
Lyudmila Blatova
Production Design
Camera
Boris Kozlov
Director of Photography
Writing
Sergey Yevlakhov
Writer
Art
Lyudmila Blatova
Production Design
Camera
Boris Kozlov
Director of Photography
Writing
Sergey Yevlakhov
Writer