Directed by
| Mario Colucci | ||
Writing Credits (in alphabetical order)
| Mario Colucci | ||
Cast (in credits order)
| Farley Granger | ... | Spike | |
| Lucia Bosè | ... | Sylvia Forrest (as Lucia Bosé) | |
| Giacomo Rossi Stuart | ... | Donald Forrest | |
| Stelvio Rosi | ... | Dr. Williams (as Stan Cooper) | |
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Mia Genberg | ... | Susan West |
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Gianni Medici | ... | Joe (as John Hamilton) |
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Giulia Rovai | ... | Joe's Girl |
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Franco Beltramme | ... | Det. Sam (as Frank Beltramme) |
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Angelo Francesco Lavagnino | ... | Prof. Lawrence (as Francesco Lavagnino) |
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Dino Fazio | ... | Insp. Wright |
| Loredana Nusciak | ... | Model for Photo of Lady Sheila Marlowe | |
Produced by
| Dino Fazio | ... | producer |
Music by
| Angelo Francesco Lavagnino | ||
Cinematography by
| Giuseppe Aquari | ||
Editing by
| Enzo Micarelli | ||
Production Design by
| Massimo Bolongaro | ||
Art Direction by
| Silvano Pan | ||
Makeup Department
| Nicla Palombi | ... | hair stylist |
| Telemaco Tilli | ... | makeup artist |
Production Management
| Mario Colombassi | ... | production manager |
Second Unit Director or Assistant Director
| Marina Prodan | ... | assistant director |
Sound Department
| Tonino Cacciottolo | ... | sound effects |
| Goffredo Salvatori | ... | sound engineer |
Camera and Electrical Department
| Carlo Aquari | ... | assistant camera |
| Gioacchino Cantone | ... | still photographer |
| Michele Pellegrini | ... | chief electrician |
| Sergio Profili | ... | key grip |
Costume and Wardrobe Department
| Elisabetta Costantini | ... | seamstress |
Editorial Department
| Carlo Broglio | ... | assistant editor |
Script and Continuity Department
| Maria Pia Sterlicchio | ... | script supervisor |
Additional Crew
| Carlo Alighiero | ... | voice dubbing: Dino Fazio (uncredited) |
| Cesare Barbetti | ... | voice dubbing: Stelvio Rosi (uncredited) |
| Gualtiero De Angelis | ... | voice dubbing: Angelo Francesco Lavagnino (uncredited) |
| Vittoria Febbi | ... | voice dubbing: Mia Genberg (uncredited) |
| Sergio Graziani | ... | voice dubbing: Farley Granger (uncredited) |
| Pino Locchi | ... | voice dubbing: Giacomo Rossi Stuart (uncredited) |
| Glauco Onorato | ... | voice dubbing: Gianni Medici (uncredited) |
| Rita Savagnone | ... | voice dubbing: Lucia Bosé (uncredited) |
