Directed by
| Massimo Pupillo | ... | (as Ralph Zucker) |
Writing Credits (in alphabetical order)
| Ruth Carter | ... | (adaptation) |
| Cesare Mancini | ... | (adaptation) |
| Romano Migliorini | ... | (screenplay) (as Robin McLorin) |
| Romano Migliorini | ... | (story) (as Robin McLorin) |
| Roberto Natale | ... | (screenplay) (as Robert Nathan) |
| Roberto Natale | ... | (story) (as Robert Nathan) |
| Edgar Allan Poe | ... | (story) |
Cast (in credits order) complete, awaiting verification
| Barbara Steele | ... | Cleo Hauff | |
| Walter Brandi | ... | Albert Kovac (as Walter Brandt) | |
| Mirella Maravidi | ... | Corinne Hauff (as Marilyn Mitchell) | |
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Alfredo Rizzo | ... | Dr. Nemek (as Alfred Rice) |
| Riccardo Garrone | ... | Joseph Morgan (as Richard Garrett) | |
| Luciano Pigozzi | ... | Kurt - the Gardener (as Alan Collins) | |
| Ennio Balbo | ... | Oscar Stinnel (as Edward Bell) | |
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Renato Lupi | ... | Archivist of the town hall (as René Wolf) |
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Tilde Dall'Aglio | ... | Louise - the Maid (as Tilde Till) |
| Ignazio Dolce | ... | Policeman (as Steve Robinson) | |
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Lucio Zarini | ... | (as Lewis Czerny) |
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Piero Sartori | ... | (as Peter Sarto) |
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Armando Guarnieri | ... | Ivert / Ivatch (as Armand Garner) |
Produced by
| J.R. Coolidge | ... | executive producer |
| Francesco Merli | ... | producer (as Frank Merle) |
| Massimo Pupillo | ... | producer |
| Felix C. Ziffer | ... | executive producer |
| Ralph Zucker | ... | producer |
Music by
| Aldo Piga | ||
Cinematography by
| Carlo Di Palma | ... | director of photography (as Charles Brown) |
Film Editing by
| Mariano Arditi | ... | (as Robert Ardis) |
Costume Design by
| Serge Selig | ||
Makeup Department
| Arianne | ... | hair stylist |
| Bud Dexter | ... | makeup artist |
Second Unit Director or Assistant Director
| Nick Berger | ... | assistant director |
Art Department
| Frank Small | ... | set designer |
Sound Department
| Goffredo Salvatori | ... | sound engineer (as Geoffrey Sellers) |
Camera and Electrical Department
| Albert Farrow | ... | camera operator |
| Theodore Kelly | ... | assistant camera |
Editorial Department
| Mary Andrews | ... | assistant editor |
Music Department
| Ralph Zucker | ... | composer: main themes |
Script and Continuity Department
| Hilda Wendrow | ... | script supervisor |
Additional Crew
| Luciano Catenacci | ... | production secretary (as Lewis Lawrence) |
| Fiorella Betti | ... | voice dubbing: Barbara Steele (uncredited) |
| Carolyn De Fonseca | ... | voice dubbing: Barbara Steele (english version) (uncredited) |
