Police chief Romeo becomes convinced that affluent professional Velasco is a serial killer known for mauling his victims with his teeth, but nobody believes him. The investigation slowly turns into a personal challenge between obsessive Romeo and stone-faced Velasco, an individual above suspicion — he murders people not because he has to, but simply because he can.
| Directing | Antonio Tibaldi | Director |
| Camera | Luca Bigazzi | Director of Photography |
| Editing | Carlotta Cristiani | Editor |
| Sound | Pivio | Music |
| Sound | Aldo De Scalzi | Music |
| Writing | Carlo Lucarelli | Novel |
| Writing | Carlo Lucarelli | Screenplay |
| Writing | Laura Paolucci | Screenplay |
| Production | Ivan Fiorini | Line Producer |
| Production | Domenico Procacci | Producer |
| Art | Davide Bassan | Production Design |
| Costume & Make-Up | Francesca Vecchi | Costume Design |
| Costume & Make-Up | Roberta Vecchi | Costume Design |
| Sound | Marco Tidu | Sound |
| Production | Cecilia Ferrari | Delegated Producer |
| Production | Anna Maria Morelli | Co-Producer |
| Writing | Roberto Moroni | Story Editor |
| Crew | Daniela Staffa | Public Relations |
| Crew | Claudio Trionfera | Public Relations |
| Production | Alberto Leotti | Production Manager |
| Production | Elia Mazzoni | Unit Manager |
| Directing | Giovanni Vaccarelli | First Assistant Director |
| Production | Giovanni Vaccarelli | Casting |
| Directing | Gina Neri | Script Supervisor |
| Directing | Ranieri Poccianti | Second Assistant Director |
| Production | Silvia Archimede | Production Secretary |
| Production | Sergio Sarnicola | Production Assistant |
| Production | Claudio Zampetti | Administration |
| Production | Tatiana Caratelli | Accountant |
| Camera | Luca Bigazzi | Camera Operator |
| Camera | Salvatore Bognanni | First Assistant Camera |
| Camera | Emanuele Ranesi | Second Assistant Camera |
| Camera | Alessandro Abbate | "B" Camera Operator |
| Art | Giampietro Huber | Assistant Production Design |
| Art | Maurizio Jacopelli | Property Master |
| Art | Antonio Marzulli | Assistant Property Master |
| Sound | Stefano Tuderti | Boom Operator |
| Costume & Make-Up | Elisa Roberto | Seamstress |
| Costume & Make-Up | Gloria Pescatore | Makeup Artist |
| Costume & Make-Up | Michele Vigliotta | Hairstylist |
| Editing | Sabrina Foti | Assistant Editor |
| Sound | Daniela Bassani | Sound Editor |
| Sound | Marco Mauti | Sound Mixer |
| Sound | Craig Carter | Sound Effects Editor |
| Sound | James Harvey | Sound Effects Editor |
| Sound | Ricky Edwards | Sound Editor |
| Sound | Bryce Grunden | Assistant Sound Editor |
| Lighting | Francesco Galli | Electrician |
| Camera | Philippe Antonello | Still Photographer |
| Lighting | Alessandro Saulini | Gaffer |
| Camera | Massimo Spina | Grip |
| Camera | Elvio Pirotta | Grip |
| Camera | Eraldo Barbona | Key Grip |
| Crew | Igor Bellinello | Driver |
| Crew | Alberto Ronzani | Driver |
| Crew | Maurizio Augelli | Generator Operator |
| Sound | Claudio Messina | Music Producer |
