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Lang Jeffries as George Collins |
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Aurora de Alba as Olga |
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Rafael Bardem as Professor Calvert |
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Eleonora Bianchi as |
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Gloria Fernán Osuna as |
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Wladimiro Tuicovich as |
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Ángel Jordán as |
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Moa Tahi as |
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Joe Kamel as |
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Nando Angelini as |
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Gianni Solaro as C.I.A. Manager |
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Aldo Bonamano as |
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Andrea Scandurra as |
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Rocco Lerro as A lab guardian (uncredited) |
| Writing | Tanio Boccia | Writer |
| Editing | Ángel Serrano | Editor |
| Writing | Mario Moroni | Writer |
| Writing | H. S. Valdés | Writer |
| Directing | Tanio Boccia | Director |
| Writing | Fernando Vitali | Writer |
| Writing | Alberto De Rossi | Writer |
| Camera | Ricardo Torres | Director of Photography |
| Sound | Piero Umiliani | Music |
| Directing | Ángel Forqué | Assistant Director |
| Directing | Mario Casalini | Assistant Director |
| Directing | Ángel Falquina | Assistant Director |
| Crew | Giovanni Stacchini | Special Effects |
| Sound | Armando Loffredi | Sound |
| Costume & Make-Up | Duilio Giustini | Makeup Artist |
| Costume & Make-Up | Giorgio Desideri | Costume Design |
| Costume & Make-Up | Emilia Fernández Cid | Hairstylist |
| Art | Saverio D'Eugenio | Production Design |
| Sound | Luis Rodríguez | Sound |
| Production | Luigi Rotolo | General Manager |
| Costume & Make-Up | Antonietta Caputo | Hairstylist |
| Production | Paolo Prestano | Production Manager |
| Art | Nicola Tamburo | Set Decoration |
