| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alberto De Martino | Crew | Directing | Director, Screenplay, Screenstory |
 Anthony Waye | Crew | Directing | Assistant Director |
 Benito Stefanelli | Crew | Crew | Master at Arms |
 Colin Jamison | Crew | Costume & Make-Up | Hairstylist |
Edmondo Amati | Crew | Production | Producer |
 Ennio Morricone | Crew | Crew | Compositor, Original Music Composer |
Enrico Sabbatini | Crew | Costume & Make-Up | Costume Design |
Erico Menczer | Crew | Camera | Director of Photography |
Fabrizio Vicari | Crew | Camera | Assistant Camera |
Gerry Humphreys | Crew | Sound | Sound Mixer |
 Giannetto De Rossi | Crew | Costume & Make-Up | Special Effects Makeup Artist |
Gilda De Guilmi | Crew | Costume & Make-Up | Hairstylist |
Giorgio Garibaldi Schwarze | Crew | Camera | Still Photographer |
Giuseppe Auriemma | Crew | Production | Production Supervisor |
Joe Pollini | Crew | Directing | Assistant Director |
Michael Robson | Crew | Writing | Screenplay |
Peter Handford | Crew | Sound | Sound |
Peter Horrocks | Crew | Sound | Sound Editor |
Peter James | Crew | Art | Set Decoration |
Roberto Giussani | Crew | Production | Production Director |
 Robin Vidgeon | Crew | Camera | Assistant Camera |
 Sergio Donati | Crew | Writing | Screenplay, Screenstory |
 Uberto Bertacca | Crew | Art | Production Design |
Vincenzo Tomassi | Crew | Editing | Editor |
Pamela Davies | Crew | Directing | Script Supervisor |
Fausto Ancillai | Crew | Sound | Sound Mixer |
Gian Maria Avetta | Crew | Production | Production Supervisor |
Franco Schioppa | Crew | Costume & Make-Up | Makeup Artist |
Penny Steyne | Crew | Costume & Make-Up | Makeup Artist |
Nick Farnes | Crew | Production | Production Director |
Roberto Brega | Crew | Camera | Camera Operator |
Armando Pace | Crew | Editing | Assistant Editor |
Pasquale Germano | Crew | Art | Assistant Production Design |
Giorgio Aureli | Crew | Camera | Assistant Camera |
Trevor Rutherford | Crew | Sound | Sound |
Benito Mancini | Crew | Production | Accountant |
Terry Smith | Crew | Costume & Make-Up | Assistant Costume Designer |
Clara Fratarcangeli | Crew | Costume & Make-Up | Seamstress |
 Adolfo Celi | Cast | Actor | Dr. Kerouac |
 Agostina Belli | Cast | Actress | Sara Golan |
 Alexander Knox | Cast | Actor | Meyer |
 Anthony Quayle | Cast | Actor | Professor Griffith |
 Caroline Langrishe | Cast | Actress | Girlfriend (as Caroline Horner) |
 Denis Lawson | Cast | Actor | 2nd Journalist |
 Eugenio Masciari | Cast | Actor | Second Asylum Patient |
 Geoffrey Keen | Cast | Actor | Gynecologist |
 Ivo Garrani | Cast | Actor | Prime Minister |
John Carlin | Cast | Actor | Robertson |
 Kirk Douglas | Cast | Actor | Robert Caine |
 Massimo Foschi | Cast | Actor | Young Arab |
 Penelope Horner | Cast | Actress | Caine’s Secretary |
 Peter Cellier | Cast | Actor | Sheckley |
Richard Cornish | Cast | Actor | 1st Journalist |
 Romolo Valli | Cast | Actor | Charrier |
Sergio Serafini | Cast | Third Asylum Patient | |
 Simon Ward | Cast | Actor | Angel Caine |
 Spiros Focás | Cast | Actor | Harbin |
 Virginia McKenna | Cast | Actress | Eva Caine |
 Vittorio Fanfoni | Cast | Actor | First Asylum Patient |
Gerard Hely | Cast | Clarke | |
Allan Hendrick | Cast | Actor | Fanatical Demonstrator |
Domenico Di Costanzo | Cast | Actor | Fourth Asylum Patient |
 Joanne Dainton | Cast | Actress | Nurse |
 Jenny Twigge | Cast | Actress | Air Hostess |
| Person | Type | Job | Role(s) |
