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Artúr Somlay as Ákos Lóránt professzor |
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Szirtes Ádám as István Kádas |
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Pécsi Sándor as Forgács |
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Éva Spányik as Éva Takács |
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Sulyok Mária as Kádas's mother |
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Gobbi Hilda as Lotte |
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Benkő Gyula as Ferenc Örvös |
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István Somló as Thompson |
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Tivadar Uray as McLane |
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Károly Kovács as Dr. Conrad |
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László Kemény as Greenwood |
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István Velenczei as Boswall |
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Lajos Soós as Gábor, driver |
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Bárdy György as Security Officer |
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János Dömsödi as |
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Jenõ Horváth as |
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János Zách as Gál is a teammate |
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József Berky as |
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Lajos Sugár as |
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János Horkay as |
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Beno Tamas as |
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Várkonyi Zoltán as comrade Mérnök |
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Csákányi László as |
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Gyula Bakos as |
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László Egri as |
| Writing | Bacsó Péter | Writer |
| Sound | Mihály Lehmann | Sound |
| Writing | Várkonyi Zoltán | Writer |
| Editing | Kerényi Zoltán | Editor |
| Directing | Várkonyi Zoltán | Director |
| Art | Varga Mátyás | Production Design |
| Sound | János Kerekes | Music |
| Camera | István Eiben | Director of Photography |
