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Борис Ливанов as Pyotr Vinogradov, inventor |
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Valentin Tsishevskiy as Senya Kaufman |
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Константин Градополов as Kotya Okhotnikov |
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Galina Pashkova as Valya, music student |
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Nadezhda Ardi as Tonya, architecture student |
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Иван Переверзев as Physical education instructor (uncredited) |
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Татьяна Барышева as Senya's mother (uncredited) |
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Всеволод Санаев as Red army sailor (uncredited) |
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Галина Степанова as Young girl (uncredited) |
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Сергей Антимонов as Professor (uncredited) |
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Yeva Milyutina as Spectator at the concert (uncredited) |
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Мария Ключарева as Middle aged woman (uncredited) |
| Writing | Лев Славин | Writer |
| Directing | Александр Мачерет | Director |
| Camera | Евгений Славинский | Director of Photography |
| Directing | K. Krumin | Assistant Director |
| Sound | Лев Книппер | Original Music Composer |
| Sound | Николай Тимарцев | Sound Director |
| Art | Алексей Уткин | Production Design |
