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Paul Naschy as Waldemar Daninsky |
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Perla Cristal as Dr. Ilona Elmann |
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Verónica Luján as Karen |
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Miguel de la Riva as Det. Heinrich Miller |
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Pilar Zorrilla as Erika Daninsky |
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José Marco as Merrill |
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Francisco Amorós as Frederick |
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Javier de Rivera as Helmut Wolfstein |
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Mark Stevens as Bill Williams |
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Ramón Lillo as Detective |
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Fabián Conde as Neville Yates |
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Sofía Casares as Girl in Tavern |
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Victoria Hernández as Ilona's Assistant |
| Writing | Paul Naschy | Screenplay |
| Directing | José María Zabalza | Director |
| Camera | Leopoldo Villaseñor | Director of Photography |
| Crew | Carlos Paradela | Makeup Effects |
| Sound | Ana Satrova | Original Music Composer |
| Editing | Sebastián Herranz | Editor |
| Editing | Luis Álvarez | Editor |
| Sound | Ángel Arteaga | Original Music Composer |
| Art | José Luis P. Ferrer | Set Decoration |
| Production | César Gallego | Executive Producer |
| Production | Maximiliano Pérez-Flores | Line Producer |
