Directed by
| Mario Gariazzo | ... | (as Roy Garret) |
Writing Credits (in alphabetical order)
| Mario Gariazzo | ... | (as Roy Garrett) |
Cast (in credits order) complete, awaiting verification
| Robert Hoffmann | ... | Tony Harris | |
| Nathalie Delon | ... | Monica Stiles | |
| Martin Balsam | ... | Inspector Jim Grant | |
| Sherry Buchanan | ... | Karin Hale | |
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Victor Valente | ... | Coleman Perry |
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Sergio Rossi | ... | Leader of 'The Silencers' |
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Mario Novelli | ... | The Silencers Henchman (as Antony Freeman) |
| Franco Garofalo | ... | Peter Collins | |
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Carlo Hintermann | ... | Air Marshal Thompson |
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Giovanna De Luca | ||
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Bruno Di Luia | ... | The Silencers Henchman |
| George Ardisson | ... | Agent for 'The Silencers' | |
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Franco Beltramme | ... | Phillips - Inspector Grant's Assistant |
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Tom Felleghy | ... | Cmdr. Smith |
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Cesare Nizzica | ... | Farmer |
| Rest of cast listed alphabetically: | |||
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Eolo Capritti | ... | Security Man (uncredited) |
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Giovanni Cianfriglia | ... | Killer (uncredited) |
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Massimo Ciprari | ... | Officer in Office (uncredited) |
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Mario Erpichini | ... | Perry Coleman (uncredited) |
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Fulvio Mingozzi | ... | Witness (uncredited) |
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Alex Partexano | ... | Doctor (uncredited) |
Produced by
| Armando Novelli | ... | producer |
Music by
| Marcello Giombini | ||
Cinematography by
| Erico Menczer | ... | director of photography |
Editing by
| Vincenzo Tomassi | ||
Art Direction by
| Francesco Cuppini | ||
Costume Design by
| Roberto Ranucci | ||
Makeup Department
| Lidia Puglia | ... | hair stylist |
| Cristina Rocca | ... | makeup artist |
Production Management
| Renato Fiè | ... | production manager |
Second Unit Director or Assistant Director
| Giuseppe Cino | ... | assistant director |
Sound Department
| Fernando Caso | ... | sound effects editor |
| Alvaro Gramigna | ... | foley artist |
| Goffredo Salvatori | ... | sound |
Stunts
| Franco Beltramme | ... | stunt actor (uncredited) |
| Giovanni Cianfriglia | ... | stunts (uncredited) |
| Bruno Di Luia | ... | stunts (uncredited) |
| Mario Novelli | ... | stunt actor (uncredited) |
Camera and Electrical Department
| Roberto Brega | ... | camera operator |
| Maurizio La Monica | ... | second camera operator |
Script and Continuity Department
| Maria Luisa Merci | ... | script girl |
Additional Crew
| Geoffrey Copleston | ... | voice dubbing: Carlo Hintermann (english version) (uncredited) |
| Vittoria Febbi | ... | voice dubbing: Nathalie Delon (uncredited) |
| Sergio Fiorentini | ... | voice dubbing: Martin Balsam (uncredited) |
| John Gayford | ... | voice dubbing (english version) (uncredited) |
| Pino Locchi | ... | voice dubbing: Robert Hoffmann (uncredited) |