Directed by
| Alberto De Martino | ||
Writing Credits (in alphabetical order)
| Adriano Bolzoni | ||
| Alberto De Martino | ||
| Renato Izzo | ||
| Lorenzo Manning | ||
| Vincenzo Mannino | ||
Cast (in credits order)
| Telly Savalas | ... | Ranko Drasovic | |
| Anne Heywood | ... | Eleanor Loraine | |
| Osvaldo Ruggieri | ... | Thomas Brown | |
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Giorgio Piazza | ... | George |
| Willeke van Ammelrooy | ... | Dorothy | |
| Rossella Falk | ... | Margaret Vervoort | |
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Antonio Guidi | ... | Dr Chandler |
| Roger Van Hool | ... | Peter Vervoort | |
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Ada Pometti | ... | Nurse |
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Alessandro Perrella | ... | Psychiatrist |
| Rest of cast listed alphabetically: | |||
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Marc Audier | ||
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Piet Balfoort | ||
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Georges Bossair | ||
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Sandra L. Brennan | ||
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Suzy Falk | ||
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Leonardo Scavino | ... | Killer |
| Serge-Henri Valcke | |||
Produced by
| Vittorio Barattolo | ... | producer |
| Valerio De Paolis | ... | associate producer |
| Guy Luongo | ... | executive producer |
| Aldo Scavarda | ... | producer |
Music by
| Stelvio Cipriani | ||
Cinematography by
| Joe D'Amato | ... | (as Aristide Massaccesi) |
Editing by
| Otello Colangeli | ||
Production Design by
| Antonio Visone | ||
Set Decoration by
| Serge-Henri Valcke | ||
Costume Design by
| Enrico Sabbatini | ||
Makeup Department
| Amato Garbini | ... | key makeup artist |
| Carla Indoni | ... | hair stylist |
| Alberto Travaglini | ... | makeup artist (as Alberto Trevaglini) |
Production Management
| Mario Cotone | ... | production manager |
| Giuseppe Rispoli | ... | production supervisor |
Second Unit Director or Assistant Director
| Leonardo Scavino | ... | assistant director (as Leo Lenoir) |
Art Department
| Luciano Crovato | ... | poster artist |
Sound Department
| Fausto Ancillai | ... | sound mixer |
| Giovanni Fratarcangeli | ... | sound |
Camera and Electrical Department
| Gianlorenzo Battaglia | ... | assistant camera (as Gian Lorenzo Battaglia) |
| Luciano Micheli | ... | key grip |
| Armando Stacchini | ... | chief electrician |
Costume and Wardrobe Department
| Ilde Ambrosoni | ... | seamstress (as Ilda Ambrosoni) |
Editorial Department
| Nadia Mazzoni | ... | assistant editor |
Script and Continuity Department
| Marion Mertes | ... | script supervisor |
Additional Crew
| Francesco Maia | ... | cashier |
| Gabriella Genta | ... | voice dubbing: Anne Heywood (uncredited) |
| Dario Penne | ... | voice dubbing: Roger van Hool (uncredited) |
| Sergio Rossi | ... | voice dubbing: Terry Savalas (uncredited) |
| Carlo Sabatini | ... | voice dubbing (uncredited) |
