Aleksey Batalov
Dmitri Gusev
Aleksey Batalov
Dmitri Gusev
Innokentiy Smoktunovskiy
Ilya Kulikov
Tatyana Lavrova
Lyolya
Mikhail Kozakov
Valery Ivanovich
Nikolai Plotnikov
Professor Sintsov
Sergei Blinnikov
Butov
Evgeniy Evstigneev
Nikolai Ivanovich
Valentin Nikulin
young physicist
Pavel Shpringfeld
physicist
Lyusyena Ovchinnikova
Nura, Gusev's younger sister
Andrey Smirnov
tall bearded physicist
Yevgeni Teterin
Surgeon
Mikhail Romm
Director
Daniil Khrabrovitsky
Writer
Mikhail Romm
Writer
Yeva Ladyzhenskaya
Editor
Dzhon Ter-Tatevosyan
Original Music Composer
German Lavrov
Director of Photography
Georgy Kolganov
Production Design