Directed by
| Umberto Lenzi | ||
Writing Credits
| Pino Boller | ... | (story) |
| Massimo Franciosa | ... | (screenplay) and |
| Luisa Montagnana | ... | (screenplay) and |
| Pino Boller | ... | (screenplay) and |
| Umberto Lenzi | ... | (screenplay) |
Cast (in credits order)
| Robert Hoffmann | ... | Christian Bauman (as Robert Hoffman) | |
| Suzy Kendall | ... | Barbara | |
 |
Ivan Rassimov | ... | Fritz Bauman |
| Adolfo Lastretti | ... | Tatum, the killer | |
| Franco Silva | ... | Luca | |
|
|
Mario Erpichini | ... | Alex |
| Maria Pia Conte | ... | Xenia | |
|
|
Luigi Antonio Guerra | ... | Boy - in the 'incipit' |
| Rosita Torosh | ... | Woman in car | |
|
|
Monica Monet | ... | Clorinda |
|
|
Guido Alberti | ... | Malcolm |
| Rest of cast listed alphabetically: | |||
|
|
Bruno Alias | ... | Party Guest (uncredited) |
|
|
Nestore Cavaricci | ... | Police inspector (uncredited) |
|
|
Raniero Dorascenzi | ... | Man in asylum in 8mm film footage (uncredited) |
|
|
Tom Felleghy | ... | Christian and Fritz's Father (uncredited) |
|
|
Giuseppe Marrocco | ... | Man in asylum in 8mm film footage (uncredited) |
Produced by
| Ugo Tucci | ... | producer |
Music by
| Ennio Morricone | ||
Cinematography by
| Guglielmo Mancori | ... | director of photography |
Editing by
| Eugenio Alabiso | ||
Production Design by
| Giacomo Calò Carducci | ||
Costume Design by
| Silvio Laurenzi | ||
Makeup Department
| Anna Graziosi | ... | hair stylist |
| Pierantonio Mecacci | ... | makeup artist (as Antonio Mecacci) |
Production Management
| Stefano Pegoraro | ... | unit manager |
Second Unit Director or Assistant Director
| Alessandro Metz | ... | assistant director |
Sound Department
| Franco Borni | ... | boom operator |
Camera and Electrical Department
| Renato Palmieri | ... | assistant camera |
| Elio Polacchi | ... | camera operator |
Costume and Wardrobe Department
| Silvio Laurenzi | ... | costumes |
Editorial Department
| Giuseppe Romano | ... | assistant editor |
Music Department
| Ennio Morricone | ... | music arranger |
Script and Continuity Department
| Marisa Calia | ... | continuity |
Additional Crew
| Valerio Zecca | ... | production secretary |
| Fiorella Betti | ... | voice dubbing: Maria Pia Conte (uncredited) |
| Pino Colizzi | ... | voice dubbing: Ivan Rassimov (uncredited) |
| Carolyn De Fonseca | ... | voice dubbing: Monica Monet (english version) (uncredited) |
| Michele Gammino | ... | voice dubbing: Franco Silva (uncredited) |
| Nando Gazzolo | ... | voice dubbing: Guido Alberti (uncredited) |
| Flaminia Jandolo | ... | voice dubbing: Monica Monet (uncredited) |
| Rita Savagnone | ... | voice dubbing: Suzy Kendall (uncredited) |
| Massimo Turci | ... | voice dubbing: Robert Hoffmann (uncredited) |
| Frank von Kuegelgen | ... | voice dubbing: Robert Hoffmann (English version) (uncredited) |
