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Елена Метёлкина as Niya |
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Вадим Ледогоров as Cadet Stepan Lebedev |
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Улдис Лиелдидж as Sergei Lebedev |
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Елена Фадеева as Maria Pavlovna |
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Вацлав Дворжецкий as Petr Petrovich |
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Надежда Семенцова as Professor Nadezhda Ivanova |
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Александр Лазарев as Professor Klimov |
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Александр Михайлов as Dreier |
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Борис Щербаков as Navigator Kolotin |
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Игорь Ледогоров as Ambassador Rakan |
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Игорь Ясулович as Torki |
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Владимир Фёдоров as Turanchoks |
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Глеб Стриженов as Glan |
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Людмила Нильская as Selena |
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Валерий Носик as Liy |
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Андрей Крюков as Professor Pryul (voice) |
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Yuri Perov as Member of the contract's committee |
| Editing | Lyubov Pushkina | Editor |
| Costume & Make-Up | Людмила Чекулаева | Costume Design |
| Directing | Ричард Викторов | Director |
| Writing | Кир Булычёв | Writer |
| Writing | Ричард Викторов | Writer |
| Art | Константин Загорский | Production Design |
| Art | В. Литвинов | Set Decoration |
| Camera | Александр Рыбин | Director of Photography |
| Sound | Алексей Рыбников | Music |
| Camera | Александр Антипенко | Director of Photography |
| Sound | Борис Корешков | Sound Director |
| Directing | Ольга Доброва-Куликова | Assistant Director |
| Directing | Владимир Мартынов | Assistant Director |
| Camera | Виктор Ульянкин | Additional Director of Photography |
| Camera | Борис Филимонихин | Additional Director of Photography |
| Costume & Make-Up | Таисия Кунич | Makeup Artist |
| Crew | Владимир Карпичёв | Stunt Coordinator |
| Production | Григорий Купершмидт | Casting Director |
| Art | E. Leontyev | Set Decoration |
