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Anthony Steffen as Inspector Ranieri |
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Richard Conte as Dr. Stone |
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Pilar Velázquez as Dr. Sarah Turner |
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Jorge Rivero as Peter Crane |
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Eduardo Fajardo as Basev |
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Pia Giancaro as Tanya |
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Luis La Torre as Robert |
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Eva Vanicek as Sonja |
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Luciano Pigozzi as William Stevens |
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Lone Fleming as Yvonne Chevrel |
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Flora Marrone as |
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Terele Pávez as Basev's wife |
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Daniela Giordano as Taga |
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Álvaro de Luna as Police Officer |
| Writing | Julio Buchs | Screenplay |
| Writing | Federico De Urrutia | Story |
| Writing | Julio Buchs | Story |
| Sound | Stelvio Cipriani | Original Music Composer |
| Art | José Antonio de la Guerra | Production Design |
| Crew | Paolo Ricci | Special Effects |
| Camera | Vicente Minaya Ortega | Director of Photography |
| Editing | Otello Colangeli | Editor |
| Writing | Mario Siciliano | Screenplay |
| Directing | Mario Siciliano | Director |
| Production | Gonzalo Elvira | Producer |
