Directed by
| Mario Bava | ||
Writing Credits
| Marcello Fondato | ... | (story and screenplay) |
| Giuseppe Barilla | ... | (collaboration) & |
| Mario Bava | ... | (collaboration) |
| Mary Arden | ... | (adaptation) (English version) (as Kelly Leon) |
Cast (in credits order) verified as complete
| Cameron Mitchell | ... | Massimo Morlacchi | |
| Eva Bartok | ... | La contessa Cristiana Cuomo | |
 |
Thomas Reiner | ... | L'ispettore Silvestri |
| Arianna Gorini | ... | Nicole | |
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Dante DiPaolo | ... | Franco Scalo (as Dante Di Paolo) |
| Mary Arden | ... | Peggy Peyton | |
| Franco Ressel | ... | Il marchese Riccardo Morelli | |
| Claude Dantes | ... | Tao-Li | |
| Luciano Pigozzi | ... | Cesare Lazzarini | |
| Lea Lander | ... | Greta (as Lea Krugher) | |
| Massimo Righi | ... | Marco | |
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Francesca Ungaro | ... | Isabella |
| Giuliano Raffaelli | ... | Zanchin | |
| Harriet Medin | ... | Clarissa (as Hariette White Medin) | |
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Mary Carmen | ... | Una modella (as Mara Carmosino) |
| Heidi Stroh | ... | La modella bionda ossigenata | |
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Enzo Cerusico | ... | Il benzinaio |
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Nadia Anty | ... | Una modella |
| Rest of cast listed alphabetically: | |||
|
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Calisto Calisti | ... | Il maggiordomo (uncredited) |
| Paul Frees | ... | Max / Sylvester / Morell / Ceaser / Marco / Zanchin / Attendant / Butler / Walla (voice) (uncredited) | |
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Romano Moraschini | ... | Il sospettato alla stazione di polizia (uncredited) |
| Goffredo Unger | ... | L'assassino mascherato (uncredited) | |
Produced by
| Georges de Beauregard | ... | co-producer (uncredited) |
| Alfredo Mirabile | ... | producer |
| Lou Moss | ... | producer: English version |
| Massimo Patrizi | ... | producer |
| Georges C. Stilly | ... | executive producer (uncredited) |
Music by
| Carlo Rustichelli | ||
Cinematography by
| Ubaldo Terzano | ... | director of photography |
| Mario Bava | ... | (uncredited) |
Editing by
| Mario Serandrei | ||
Set Decoration by
| Arrigo Breschi | ||
Costume Design by
| Tina Grani | ||
Makeup Department
| Marisa Laganga | ... | hair stylist |
| Emilio Trani | ... | makeup artist |
Production Management
| Benito Carifi | ... | production secretary |
| Armando Govoni | ... | production manager |
| Franco Grifeo | ... | production inspector |
Second Unit Director or Assistant Director
| Priscilla Contardi | ... | first assistant director |
| Cristina Grieco | ... | second assistant director |
Art Department
| Arrigo Breschi | ... | set dresser |
| Constantin Belinsky | ... | poster designer: french poster (uncredited) |
Sound Department
| Pat Somerset | ... | recording engineer: English version |
| Vittorio Trentino | ... | sound |
| Fabio Ancillai | ... | sound mixer (uncredited) |
| Italo Cameracanna | ... | foley artist (uncredited) |
| Oreste Lionello | ... | voice double: Enzo Cerusico (uncredited) |
Camera and Electrical Department
| Mario Mancini | ... | camera operator |
| Antonio Rinaldi | ... | gaffer (uncredited) |
Costume and Wardrobe Department
| Eleanora Garnett | ... | costumes: Eva Bartok |
Editorial Department
| Lina Caterini | ... | assistant editor |
Script and Continuity Department
| Luciana Loschiavo | ... | script supervisor |
Additional Crew
| Franco Grifeo | ... | production administrator |
| Piero Speziali | ... | accountant |
| Gino Baghetti | ... | italian voice dubbing: Calisto Calisti (uncredited) |
| Cesare Barbetti | ... | italian voice dubbing: Massimo Righi (uncredited) |
| René Bériard | ... | french voice dubbing: Franco Ressel (uncredited) |
| Rosetta Calavetta | ... | italian voice dubbing: Mary Arden (uncredited) |
| Claude Chantal | ... | french voice dubbing: Lea Lander (uncredited) |
| Dhia Cristiani | ... | italian voice dubbing: Claude Dantes (uncredited) |
| Jacques Dacqmine | ... | french voice dubbing: Cameron Mitchell (uncredited) |
| Bernard Dhéran | ... | french voice dubbing: Thomas Reiner (uncredited) |
| Maria Pia Di Meo | ... | italian voice dubbing: Arianna Gorini (uncredited) |
| Nando Gazzolo | ... | italian voice dubbing: Dante DiPaolo (uncredited) |
| Sophie Leclair | ... | french voice dubbing: Mary Arden (uncredited) |
| Pino Locchi | ... | italian voice dubbing: Cameron Mitchell (uncredited) |
| Lou Moss | ... | english dialogue director (uncredited) |
| Hubert Noël | ... | french voice dubbing: Massimo Righi (uncredited) |
| Carlo Romano | ... | italian voice dubbing: Luciano Pigozzi (uncredited) |
| Martine Sarcey | ... | french voice dubbing: Eva Bartok (uncredited) |
| Rita Savagnone | ... | italian voice dubbing: Lea Lander (uncredited) |
| Lydia Simoneschi | ... | italian voice dubbing: Eva Bartok (uncredited) |
| Arlette Thomas | ... | french voice dubbing: Arianna Gorini (uncredited) |
| Renato Turi | ... | italian voice dubbing: Thomas Reiner (uncredited) |
