Sergey Korolev
Maria Nikolaevna
Ksenia Vintsentini
Konstantin Tsiolkovskiy
Balanin
Friedrich Tsander
Mikhail Tikhonravov
Yuriy Pobedonostsev
Mikhail Tukhachevskiy
Investigator Shestakov
Ivan Kleymyonov
The Old Woman
Teterkin
Tsander's Wife
Reshetnyak
Conductress
Grizodubova
Camp Chief
Telegrapher
Brigadier
Andrey Kostikov
Professor
Head of Security
Vasiliy
The Young Woman
Doctor
Tsander's Daughter
Zhora
Yardman N2
The Neighbor
Lebedeva
Natasha Korolyova
Flea
The Old Man
Pilot Gromov
Military Man at the Ball
Shimeliovich
Secretary
Sledovatel Bykov
Adjutant
Investigator
Yardman N1
The Boy
Nurse
Vasiliy Ulrikh
Kleymyonov's Wife
Grizoduboba's Mother
Brigade Commander
Photographer
Mikhail Machinskiy
Golyakov
The Guard
Commandant
Eyeglasses