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Joachim Fuchsberger as Dr. Johannes Böhk, gen. Justus |
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Heinz Reincke as Dr. Robert Uthofft, gen. Nichtraucher |
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Diana Körner as Schwester Beate |
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Bernd Herzsprung as Theodor Laban |
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Tilo von Berlepsch as Direktor Grünkern |
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Robert Jarczyk as Johnny Trotz |
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Alois Mittermaier as Matthias |
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Otto Bolesch as Professor Kreuzkamm |
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Otto Kurth as Otto Carstens |
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Wolfgang Schwarz as Herr von Simmern |
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Gudula Blau as Frau von Simmern |
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Anita Mally as Inge Kreuzkamm |
| Directing | Werner Jacobs | Director |
| Writing | Erich Kästner | Novel |
| Sound | Rolf A. Wilhelm | Original Music Composer |
| Camera | Wolfgang Treu | Director of Photography |
| Editing | Adolf Schlyssleder | Editor |
| Writing | Franz Seitz Junior | Screenplay |
| Production | Franz Seitz Junior | Producer |
