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Richard Harrison as Steve Norton |
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Alida Chelli as Ulla Helger |
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Luis Dávila as Gustav |
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Diana Lorys as Huguette |
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Franco De Rosa as Capitano Darvi |
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Rosalba Neri as Margot |
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Audrey McDonald as Mrs. Van der Hoven |
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Roberto Spiombi as Dupuis |
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Alberto Plebani as Van der Hoven |
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José Marco as Larry Brooks |
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Enrico Canestrini as Edward Dwight |
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Ángel Menéndez as Yacht Captain |
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Goffredo Unger as Kurt |
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Ferruccio Viotti as Lester Barrow |
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Attilio Dottesio as Il maggiore Hernandez |
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Giovanni Brusadori as (uncredited) |
| Writing | Arpad De Riso | Writer |
| Writing | Aldo Florio | Writer |
| Writing | Roberto Gianviti | Writer |
| Writing | Pedro Gil Paradela | Writer |
| Camera | Federico G. Larraya | Director of Photography |
| Directing | Aldo Florio | Director |
| Sound | Robby Poitevin | Original Music Composer |
| Art | Saverio D'Eugenio | Art Designer |
| Costume & Make-Up | Riccardo Domenici | Costume Designer |
| Costume & Make-Up | Sergio Angeloni | Makeup Artist |
| Editing | Renato Cinquini | Editor |
