| Person | Type | Job | Role(s) |
|---|---|---|---|
 Angelo Iacono | Crew | Production | Production Manager |
 Bernardino Zapponi | Crew | Writing | Screenplay |
 Carlo Rambaldi | Crew | Crew | Special Effects |
Claudio Argento | Crew | Production | Executive Producer |
 Claudio Simonetti | Crew | Sound | Original Music Composer |
 Dario Argento | Crew | Directing | Director, Writer |
Franco Fraticelli | Crew | Editing | Editor |
Germano Natali | Crew | Crew | Special Effects |
Giorgio Gaslini | Crew | Sound | Original Music Composer |
Giuseppe Bassan | Crew | Art | Production Design |
Luigi Kuveiller | Crew | Camera | Director of Photography |
Massimo Anzellotti | Crew | Sound | Foley Artist |
Maurizio Garrone | Crew | Art | Assistant Art Director |
Piero Bozza | Crew | Editing | Assistant Editor |
Salvatore Argento | Crew | Production | Producer |
Ubaldo Terzano | Crew | Camera | Camera Operator |
Nick Alexander | Crew | Sound | Sound Editor |
 Stefano Rolla | Crew | Directing | Assistant Director |
Francesco Bellomo | Crew | Camera | Still Photographer |
Mario Faraoni | Crew | Sound | Sound Recordist |
Antonio Annunziata | Crew | Camera | Assistant Camera |
Nicla Palombi | Crew | Costume & Make-Up | Hairstylist |
Armando Mannini | Crew | Art | Set Decoration |
Elena Mannini | Crew | Costume & Make-Up | Costume Design |
Carlo De Marchis | Crew | Crew | Special Effects Assistant |
Antonio Tonti | Crew | Camera | Assistant Camera |
Giovanni Morosi | Crew | Costume & Make-Up | Makeup Artist |
Cesare Jacolucci | Crew | Production | Production Coordinator |
Giuliano Laurenti | Crew | Costume & Make-Up | Makeup Supervisor |
Eugenio Fiori | Crew | Sound | Boom Operator |
Sergio Coletta | Crew | Lighting | Gaffer |
Angela Viglino | Crew | Costume & Make-Up | Seamstress |
Vivalda Vigorelli | Crew | Directing | Continuity |
Sergio Emidi | Crew | Camera | Key Grip |
Carlo Cucchi | Crew | Production | Assistant Production Manager |
Carlo Du Bois | Crew | Production | Production Accountant |
Aldo Taloni | Crew | Art | Construction Foreman |
Stefano Olivieri | Crew | Art | Set Dresser |
Aldo Bonamano | Cast | Carlo's Father | |
 Attilio Dottesio | Cast | Actor | Florist (uncredited) |
 Bruno Di Luia | Cast | Actor | Concerned Man in Restroom (uncredited) |
 Clara Calamai | Cast | Actress | Marta |
 Dante Fioretti | Cast | Police Photographer | |
 Daria Nicolodi | Cast | Actress | Gianna Brezzi |
Dario Argento | Cast | Actor | Murderer's Hands (uncredited) |
 David Hemmings | Cast | Actor | Marcus Daly |
 Eros Pagni | Cast | Actor | Supt. Calcabrini |
 Fulvio Mingozzi | Cast | Actor | Agent Mingozzi |
 Furio Meniconi | Cast | Actor | Rodi |
 Gabriele Lavia | Cast | Actor | Carlo |
 Geraldine Hooper | Cast | Actress | Massimo Ricci |
 Giuliana Calandra | Cast | Actress | Amanda Righetti |
 Glauco Mauri | Cast | Actor | Prof. Giordani |
 Glauco Onorato | Cast | Actor | (uncredited) |
Liana Del Balzo | Cast | Elvira | |
 Lorenzo Piani | Cast | Actor | Fingerprint Cop |
 Macha Méril | Cast | Actress | Helga Ulmann |
 Marc Smith | Cast | Actor | Professor Giordani (voice) |
 Marilù Tolo | Cast | Actress | Carol (archive footage) (uncredited) |
 Nicoletta Elmi | Cast | Actress | Olga |
 Omero Capanna | Cast | Actor | Hitman (uncredited) |
 Piero Mazzinghi | Cast | Actor | Bardi |
 Piero Vida | Cast | Actor | Fat Cop |
 Salvatore Baccaro | Cast | Actor | Fruit Vendor (uncredited) |
 Salvatore Puntillo | Cast | Actor | Police Agent |
 Tom Felleghy | Cast | Actor | Surgeon (uncredited) |
 Vittorio Fanfoni | Cast | Actor | Cop Taking Notes |
Jacopo Mariani | Cast | Young Carlo | |
 Mario Pascucci | Cast | Library Caretaker (uncredited) | |
Franco Vaccaro | Cast | Pietro Valgoi (uncredited) | |
 Gianni Di Segni | Cast | Actor | Rabbi (uncredited) |
| Person | Type | Job | Role(s) |
