Een bekende Amerikaanse horrorschrijver gaat naar Rome om zijn laatste boek te promoten. Daar blijkt dat de gruwelijke moorden uit zijn boek één voor één worden uitgevoerd. De schrijver helpt de politie bij het onderzoek, maar raakt dieper in de zaak betrokken dan hem lief is.
| Art | Giuseppe Bassan | Production Design |
| Directing | Michele Soavi | Second Assistant Director |
| Sound | Massimo Anzellotti | Sound Effects |
| Art | Cesare Piccini | Assistant Property Master |
| Costume & Make-Up | Diego Della Valle | Shoe Design |
| Art | Antonella Caputo | Assistant Production Design |
| Production | Carlo Du Bois | Production Accountant |
| Editing | Piero Bozza | Assistant Editor |
| Crew | Giovanni Corridori | Special Effects |
| Costume & Make-Up | Patrizia Corridoni | Key Hair Stylist |
| Art | Maurizio Garrone | Set Decoration |
| Writing | Dario Argento | Story |
| Crew | Enrico Lucherini | Unit Publicist |
| Camera | Roberto Marsigli | Assistant Camera |
| Sound | Giancarlo Laurenzi | Boom Operator |
| Production | Cesare Jacolucci | Production Manager |
| Camera | Maurizio Piano | Assistant Camera |
| Lighting | Francesco Giulivi | Gaffer |
| Sound | Claudio Simonetti | Original Music Composer |
| Production | Saverio Mangogna | Production Secretary |
| Editing | Roberto Priori | Assistant Editor |
| Sound | Romano Pampaloni | Sound Mixer |
| Art | Aldo Taloni | Set Dresser |
| Production | Cesare Jacolucci | Production Supervisor |
| Art | Giuseppe Pagnotta | Property Master |
| Production | Giuseppe Mangogna | Production Manager |
| Production | Ferdinando Caputo | Production Accountant |
| Editing | David Block | Colorist |
| Costume & Make-Up | Vanda Caprioli | Other |
| Camera | Francesco Bellomo | Still Photographer |
| Costume & Make-Up | Franco Tomei | Costume Designer |
| Production | Claudio Argento | Producer |
| Art | Osvaldo Monaco | Property Master |
| Directing | Lamberto Bava | First Assistant Director |
| Editing | Franco Fraticelli | Editor |
| Sound | Mario Dallimonti | Sound |
| Costume & Make-Up | Pierangelo Cicoletti | Costume Designer |
| Directing | Dario Argento | Director |
| Costume & Make-Up | Pierantonio Mecacci | Makeup Artist |
| Camera | Mario Moreschini | Key Grip |
| Sound | Luciano Anzellotti | Sound Effects |
| Art | Tommaso Barbi | Set Decoration |
| Production | Salvatore Argento | Executive Producer |
| Sound | Fabio Pignatelli | Original Music Composer |
| Sound | Massimo Morante | Original Music Composer |
| Writing | Dario Argento | Screenplay |
| Directing | Francesca Roberti | Script Supervisor |
| Art | Massimo Garrone | Assistant Set Decoration |
| Costume & Make-Up | Barbara Canevari | Assistant Costume Designer |
| Camera | Giuseppe Tinelli | Camera Operator |
| Camera | Remo Cartocci | Grip |
| Camera | Luciano Tovoli | Director of Photography |
