| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfonso Avincola | Crew | Camera | Still Photographer |
Alfonso D'Artega | Crew | Sound | Orchestrator |
Alvaro Lanzoni | Crew | Camera | Camera Operator |
Angelo Lannutti | Crew | Camera | Assistant Camera |
Angiolina Menichelli | Crew | Costume & Make-Up | Costume Design |
Armando Timpani | Crew | Crew | Sound Recordist |
Bert Shefter | Crew | Sound | Original Music Composer |
Brunello Serena Ulloa | Crew | Art | Set Decoration |
Bruno Zanoli | Crew | Sound | Boom Operator |
Carlo Grandone | Crew | Directing | Assistant Director |
Carmen Frosali | Crew | Costume & Make-Up | Costume Supervisor |
Enzo Silvestri | Crew | Sound | Sound Engineer |
 Federico Tocci | Crew | Camera | Key Grip |
Franco Delli Colli | Crew | Camera | Director of Photography |
Gene Ruggiero | Crew | Editing | Editor |
Giorgio Giovannini | Crew | Art | Art Direction |
Harold E. Knox | Crew | Production | Associate Producer |
Lionello Meucci | Crew | Production | Assistant Production Manager |
Luciano Volpato | Crew | Production | Production Supervisor |
Norman B. Schwartz | Crew | Sound | Music Editor |
Paul Sawtell | Crew | Sound | Original Music Composer |
Pierantonio Mecacci | Crew | Costume & Make-Up | Makeup Artist |
 Richard Matheson | Crew | Writing | Screenplay, Novel |
Rita Agostini | Crew | Directing | Script Supervisor |
Robert L. Lippert | Crew | Production | Producer |
 Samuel Z. Arkoff | Crew | Production | Executive Producer |
Sidney Salkow | Crew | Directing | Director |
Ubaldo Ragona | Crew | Directing | Director, Screenplay |
Vico Vaccaro | Crew | Production | Production Manager |
William F. Leicester | Crew | Writing | Screenplay |
Ermete Santini | Crew | Art | Other |
Franco Rispoli | Crew | Art | Other |
Furio M. Monetti | Crew | Writing | Screenplay |
Renato Pedrini | Crew | Lighting | Electrician |
Antonio Corevi | Cast | Actor | Governor |
 Carolyn De Fonseca | Cast | Actress | Ruth Collins (voice) |
Christi Courtland | Cast | Actress | Kathy Morgan |
 Emma Danieli | Cast | Actress | Virginia Morgan |
Enrico Salvatore | Cast | Actor | TV Reporter |
 Ettore Ribotta | Cast | Actor | TV Reporter |
 Franca Bettoia | Cast | Actress | Ruth Collins |
 Giacomo Rossi Stuart | Cast | Actor | Ben Cortman |
 Giuseppe Mattei | Cast | Actor | New People Leader |
 Umberto Raho | Cast | Actor | Dr. Mercer |
 Vincent Price | Cast | Actor | Dr. Robert Morgan |
Rolando De Rossi | Cast | Actor | TV Reporter |
 Alessandro Tedeschi | Cast | Actor | Passerby |
| Person | Type | Job | Role(s) |
