| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alberto Spagnoli | Crew | Camera | Director of Photography |
 André Ceccarelli | Crew | Sound | Musician |
Carlo Egidi | Crew | Art | Art Direction |
Carlo Gervasi | Crew | Art | Set Decoration |
Carlo Palmieri | Crew | Sound | Sound |
 Carlo Ponti | Crew | Production | Producer |
 Carlo Rambaldi | Crew | Visual Effects | Special Effects Supervisor |
Catherine Zins | Crew | Editing | Assistant Editor |
 Christian Gaubert | Crew | Sound | Musician, Conductor |
Christiane Lack | Crew | Editing | Editor |
Fedora Zincone | Crew | Editing | Editor |
 Francis Lai | Crew | Sound | Original Music Composer |
Giovanni Fiore Coltellacci | Crew | Camera | Assistant Camera |
Jacques Bar | Crew | Production | Producer, Executive Producer |
 Jannick Top | Crew | Sound | Musician |
Jose Villaverde | Crew | Production | Casting |
 Luciano Vincenzoni | Crew | Writing | Screenplay, Story |
Mark Peploe | Crew | Writing | Screenplay |
Nicola Badalucco | Crew | Writing | Screenplay, Story |
Otello Fava | Crew | Costume & Make-Up | Makeup Artist |
 René Clément | Crew | Directing | Director, Screenplay |
 Vic Morrow | Crew | Crew | Stunts |
Wolfdieter von Stein | Crew | Production | Producer |
Zev Braun | Crew | Production | Producer |
Luciano Vito | Crew | Costume & Make-Up | Hairstylist |
Luciano Piperno | Crew | Production | Production Supervisor, General Manager |
Nadia Vitali | Crew | Costume & Make-Up | Costume Design |
Antonio Gabrielli | Crew | Directing | Assistant Director |
Carlo De Marchis | Crew | Crew | Special Effects Assistant |
Anita Borgiotti | Crew | Directing | Script Supervisor |
Emilio Loffredo | Crew | Camera | Camera Operator |
Marco Pettini | Crew | Directing | Assistant Director |
Sergio Bologna | Crew | Production | Administration |
 Armando Brancia | Cast | Actor | Inspector Carrara |
 Carl Möhner | Cast | Actor | Cyrus Franklin |
 Clelia Matania | Cast | Actress | Old Neighbour |
 Georg Marischka | Cast | Actor | Henderson |
John Whittington | Cast | "Boots" Peter Franklin | |
 Marco Tulli | Cast | Actor | Commissaire Trieste |
 Margherita Horowitz | Cast | Actress | Maid (uncredited) |
 Maria Cumani Quasimodo | Cast | Actress | Princess Ruspini (uncredited) |
 Maria Schneider | Cast | Actress | Michelle |
 Nadja Tiller | Cast | Actress | Lotte |
 Renato Pozzetto | Cast | Actor | Gianni |
 Robert Vaughn | Cast | Actor | Stuart Chase |
 Sydne Rome | Cast | Actress | Ann |
Vic Morrow | Cast | Actor | Vic |
| Person | Type | Job | Role(s) |
