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Pierre Brice as Hans von Arnam |
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Scilla Gabel as Elfie Wahl |
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Dany Carrel as Liselotte Kornheim |
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Herbert A. E. Böhme as Prof. Gregorius Wahl |
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Wolfgang Preiss as Doctor Loren Bolem |
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Marco Guglielmi as Ralf |
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Olga Solbelli as Selma |
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Liana Orfei as Annelore |
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Alberto Archetti as Konrad |
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Harriet Medin as Marta |
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Cristina Gaïoni as L'amici di Liselotte |
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Carlo D'Angelo as Il maggiordomo del dottore |
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Ferdinando Baldi as L'assistente del dottore |
| Writing | Remigio Del Grosso | Writer |
| Directing | Giorgio Ferroni | Director |
| Writing | Giorgio Ferroni | Writer |
| Writing | Ugo Liberatore | Writer |
| Writing | Pieter van Weigen | Story |
| Camera | Pier Ludovico Pavoni | Director of Photography |
| Writing | Giorgio Stegani | Writer |
| Production | Giampaolo Bigazzi | Producer |
| Art | Carlo Gentili | Set Decoration |
| Sound | Carlo Innocenzi | Original Music Composer |
| Editing | Antonietta Zita | Editor |
| Art | Arrigo Equini | Production Design |
| Costume & Make-Up | Franco Palombi | Makeup Artist |
| Production | Charles Kornel | Producer |
| Production | Piero Ghione | Production Supervisor |
| Production | Thomas Sagone | Production Supervisor |
| Production | Lucien Vittel | Production Manager |
| Directing | Giuliano Betti | Assistant Director |
| Directing | Piero Braccialini | Second Assistant Director |
| Sound | Jacques Bonpunt | Sound |
| Sound | Umberto Picistrelli | Sound |
| Camera | Angelo Lotti | Camera Operator |
| Camera | Renato Mascagno | Assistant Camera |
