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Anthony Franciosa as Peter Neal |
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John Saxon as Bullmer |
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Daria Nicolodi as Anne |
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Giuliano Gemma as Detective Germani |
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Christian Borromeo as Gianni |
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Mirella D'Angelo as Tilde |
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Veronica Lario as Jane McKerrow |
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Ania Pieroni as Elsa Manni |
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Eva Robin's as Girl on Beach |
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Carola Stagnaro as Detective Altieri |
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John Steiner as Christiano Berti |
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Lara Wendel as Maria Alboretto |
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Isabella Amadeo as Bullmer's secretary |
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Mirella Banti as Marion |
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Enio Girolami as Department Store Manager |
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Monica Maisani as |
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Marino Masé as John |
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Fulvio Mingozzi as Alboretto |
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Giampaolo Saccarola as Coroner |
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Ippolita Santarelli as Prostitute |
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Francesca Viscardi as |
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Dario Argento as Narrator / Murderer's Hands (voice) (uncredited) |
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Lamberto Bava as Elevator Repairman #1 (uncredited) |
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Michele Soavi as Maria's Boyfriend / Man with Girl on Beach (uncredited) |
| Art | Giuseppe Bassan | Production Design |
| Production | Saverio Mangogna | Production Secretary |
| Crew | Enrico Lucherini | Unit Publicist |
| Production | Carlo Du Bois | Production Accountant |
| Costume & Make-Up | Diego Della Valle | Shoe Design |
| Production | Ferdinando Caputo | Production Accountant |
| Directing | Francesca Roberti | Script Supervisor |
| Editing | David Block | Colorist |
| Editing | Roberto Priori | Assistant Editor |
| Editing | Piero Bozza | Assistant Editor |
| Costume & Make-Up | Vanda Caprioli | Other |
| Costume & Make-Up | Barbara Canevari | Assistant Costume Designer |
| Camera | Giuseppe Tinelli | Camera Operator |
| Camera | Maurizio Piano | Assistant Camera |
| Camera | Mario Moreschini | Key Grip |
| Camera | Roberto Marsigli | Assistant Camera |
| Lighting | Francesco Giulivi | Gaffer |
| Camera | Remo Cartocci | Grip |
| Camera | Francesco Bellomo | Still Photographer |
| Crew | Giovanni Corridori | Special Effects |
| Sound | Romano Pampaloni | Sound Mixer |
| Sound | Giancarlo Laurenzi | Boom Operator |
| Sound | Mario Dallimonti | Sound |
| Sound | Massimo Anzellotti | Sound Effects |
| Sound | Luciano Anzellotti | Sound Effects |
| Art | Aldo Taloni | Set Dresser |
| Art | Cesare Piccini | Assistant Property Master |
| Art | Giuseppe Pagnotta | Property Master |
| Art | Osvaldo Monaco | Property Master |
| Art | Massimo Garrone | Assistant Set Decoration |
| Art | Antonella Caputo | Assistant Production Design |
| Directing | Michele Soavi | Second Assistant Director |
| Directing | Lamberto Bava | First Assistant Director |
| Production | Giuseppe Mangogna | Production Manager |
| Production | Cesare Jacolucci | Production Manager |
| Production | Cesare Jacolucci | Production Supervisor |
| Costume & Make-Up | Pierantonio Mecacci | Makeup Artist |
| Costume & Make-Up | Patrizia Corridoni | Key Hair Stylist |
| Costume & Make-Up | Franco Tomei | Costume Designer |
| Costume & Make-Up | Pierangelo Cicoletti | Costume Designer |
| Art | Maurizio Garrone | Set Decoration |
| Art | Tommaso Barbi | Set Decoration |
| Editing | Franco Fraticelli | Editor |
| Camera | Luciano Tovoli | Director of Photography |
| Sound | Claudio Simonetti | Original Music Composer |
| Sound | Fabio Pignatelli | Original Music Composer |
| Sound | Massimo Morante | Original Music Composer |
| Production | Salvatore Argento | Executive Producer |
| Production | Claudio Argento | Producer |
| Writing | Dario Argento | Story |
| Writing | Dario Argento | Screenplay |
| Directing | Dario Argento | Director |
| Production | Angelo Iacono | General Manager |
