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Paul Naschy as Jervás |
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Óscar Jaenada as Nicolás Tremel |
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Laia Marull as Leonor |
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Daniele Liotti as Lázaro |
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Silvia Abascal as Luisa Llorente |
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Ana Risueño as Dra. Cerviá |
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Luis Zahera as Lovecraft |
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Eusebio Poncela as Maximilian |
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Rodolfo Sancho as Eduardo |
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Norma Ruiz as Ana |
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Jimmy Barnatán as Garnea |
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Francisco Maestre as Alistair Crowley |
| Directing | José Luis Alemán | Director |
| Writing | José Luis Alemán | Writer |
| Writing | H.P. Lovecraft | Original Story |
