Directed by
| Francesco Prosperi | ... | (as Franco Prosperi) |
Writing Credits
| Francesco Prosperi | ... | (story) (as Franco Prosperi) |
| Francesco Prosperi | ... | (screenplay) (as Franco Prosperi) & |
| Giovanni Simonelli | ... | (screenplay) |
| Dario Argento | ... | (screenplay collaboration) & |
| Raimondo Del Balzo | ... | (screenplay collaboration) |
Cast (in credits order)
| Robert Webber | ... | Tony Costa | |
| Elsa Martinelli | ... | Laureen | |
| Jean Servais | ... | Jean | |
| Marina Berti | ... | Ann | |
| Pierre Zimmer | ... | Gabriel Blondell | |
 |
Franco Giornelli | ... | Coco Hermann |
| Emilio Messina | ... | Willy | |
| Ennio Balbo | ... | Robin (as William Bosh) | |
| Umberto Raho | ... | Trafficante di morfina | |
|
|
Giovanni Ivan Scratuglia | ... | Poliziotto (as Giovanni Scratuglia) |
|
|
Pierre Marty | ||
Produced by
| Francesco Thellung | ... | producer |
Music by
| Piero Piccioni | ... | (as Piero Morgan) |
Cinematography by
| Sante Achilli | ||
Editing by
| Ruggero Mastroianni | ||
Production Design by
| Dario Micheli | ||
Costume Design by
| Dario Micheli | ||
Makeup Department
| Nilo Jacoponi | ... | makeup artist |
| Amalia Paoletti | ... | hair stylist |
Production Management
| Roberto Cuomo | ... | production supervisor |
| Gino Millozza | ... | production manager (as Luigi Millozza) |
Second Unit Director or Assistant Director
| Liana Ferri | ... | second assistant director |
| Paul Nuyttens | ... | first assistant director (as P. Nuyttens) |
Sound Department
| Gene Luotto | ... | post-synchronization |
| Alessandro Sarandrea | ... | sound |
Camera and Electrical Department
| Ubaldo Terzano | ... | camera operator |
Costume and Wardrobe Department
| Francesca Romana Cofano | ... | assistant costume designer |
Editorial Department
| Romana Fortini | ... | assistant editor |
Additional Crew
| Cesare Barbetti | ... | voice dubbing: Franco Giornelli (uncredited) |
| Maria Pia Di Meo | ... | voice dubbing: Elsa Martinelli (uncredited) |
| Aldo Giuffrè | ... | voice dubbing: Robert Webber (uncredited) |
| Pino Locchi | ... | voice dubbing: Pierre Zimmer (uncredited) |
| Bruno Persa | ... | voice dubbing: Jean Servais (uncredited) |
| Rita Savagnone | ... | voice dubbing: Marina Berti (uncredited) |
| Daniele Tedeschi | ... | voice dubbing: Emilio Messina (uncredited) |
| Sergio Tedesco | ... | voice dubbing: Umberto Raho (uncredited) |
