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Paul Naschy as Father Adrian Dunning |
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Maria Perschy as Patricia Gibson |
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María Kosty as Deborah Gibson |
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Mercedes Molina as Leila Gibson |
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Joan Llaneras as John Gibson |
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Luis Induni as Udo |
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Jordi Torras as Dr. Lewton Buchanan |
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Roger Leveder as Richard Harrington |
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Marta Avilés as Sandra |
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Juan Velilla as Comisario |
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Florencio Calpe as Christian |
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Dora Santacreu as Abigail |
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Esteban Dalmases as Policía (uncredited) |
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Джек Тейлор as Father Adrian Dunning (voice) |
| Directing | Juan Bosch | Director |
| Camera | Francisco Sánchez | Director of Photography |
| Writing | Juan Bosch | Screenplay |
| Writing | Jordi Gigó | Writer |
| Writing | Paul Naschy | Screenplay |
| Art | Alfonso de Lucas | Art Direction |
| Art | Alfonso de Lucas | Set Decoration |
| Writing | Paul Naschy | Story |
| Sound | Alberto Argudo | Original Music Composer |
| Costume & Make-Up | Adolfo Ponte | Makeup Artist |
| Editing | Antonio Ramírez de Loaysa | Editor |
| Costume & Make-Up | Manolita Ponte | Makeup Artist |
| Costume & Make-Up | Hipólita López | Hairstylist |
| Camera | Javier Ferrer | Assistant Camera |
