Policewoman Anna Mari is forced to play a dangerous game with the title serial killer. If she loses, she witnesses the maniac's tortured victims having their throats cut in explicit close-up detail via webcam. She teams up with British cop John Brennan to find out the identity of the murderer.
| Directing | Dario Argento | Director |
| Writing | Franco Ferrini | Story |
| Production | Claudio Argento | Executive Producer |
| Production | Roy Bava | Casting |
| Costume & Make-Up | Patrizia Chericoni | Costume Design |
| Costume & Make-Up | Florence Emir | Costume Design |
| Art | Massimo Antonello Geleng | Production Design |
| Editing | Walter Fasano | Editor |
| Writing | Dario Argento | Screenplay |
| Art | Marina Pinzuti Ansolini | Production Design |
| Art | Massimo Antonello Geleng | Art Direction |
| Production | Dario Argento | Producer |
| Writing | Dario Argento | Story |
| Writing | Phoebe Scholfield | Dialogue |
| Writing | Franco Ferrini | Screenplay |
| Directing | Marco Santoro | Third Assistant Director |
| Directing | Francesco Perri | Second Assistant Director |
| Directing | Roy Bava | First Assistant Director |
| Writing | Jay Benedict | Dialogue |
| Camera | Benoît Debie | Director of Photography |
| Sound | Claudio Simonetti | Original Music Composer |
