Cast & crew
The Killer Must Kill Again (1975)
Directed by Luigi Cozzi Written by Luigi Cozzi, Daniele Del Giudice
Cast
| George Hilton | Mainardi |
| Antoine Saint-John | Gina's Killer |
| Femi Benussi | Dizzy |
| Cristina Galbó | Laura |
| Eduardo Fajardo | Inspector Juve (as Edmond Bréon) |
| Teresa Velázquez | Mainardi |
| Alessio Orano | Prince Luca |
| Dario Griachi | |
| Luigi Antonio Guerra | |
| Carla Mancini | |
| Achille Grioni | (uncredited) |
| Sydne Rome | (uncredited) |
| Claudio Sforzini | (uncredited) |
Crew
| Biagio Angelini | Production Secretary |
| Vittorio Pinelli | Production Secretary |
| Piergiorgio Pozzi | Camera Operator |
| Luigi Cozzi | Screenplay |
| Lucia Grazzi | Continuity |
| Adriano Bolzoni | Dialogue |
| Luigi Cozzi | Director |
| Daniele Del Giudice | Story |
| Pierluigi Ottina | Production Supervisor |
| Riccardo Pallottini | Director of Photography |
| Maura Turchi | Hairstylist |
| Alberto Moro | Editor |
| Giuseppe Tortorella | Executive Producer |
| Franco Di Giacomo | Director of Photography |
| Umberto Lenzi | Producer |
| Paolo Tortorella | Second Assistant Director |
| Luciano Sacripanti | Assistant Director |
| Carlo Petriccioli | Assistant Camera |
| Elio Moretti | Assistant Editor |
| Dario Mulazzani | Assistant Camera |
| Daniele Del Giudice | Screenplay |
| Adriana Manici | Seamstress |
| Luigi Cozzi | Story |
| Domenico Pasqua Di Bisceglie | Sound |
| Giuseppe Ferranti | Makeup Artist |
| Nando De Luca | Original Music Composer |
| Giuseppe Tortorella | Producer |
| Sergio Gobbi | Co-Producer |
| Luciana Schiratti | Art Direction |