| Cast | Tomas Milian (as Vincenzo Marazzi 'Il Gobbo' / Sergio Marazzi 'Er Monnezza'), Pino Colizzi (as Commissario Sarti ), Isa Danieli (as Maria - Prostitute), Sal Borgese (as Milo Dragovic 'Albanese'), Luciano Catenacci (as Adalberto Maria Perrone), Solvi Stubing (as Marika Engver - Embassy Clerk ), Guido Leontini (as Mario Di Gennaro - 'Sogliola' ), Francesco D'Adda (as The Bespectacled Psychiatrist ), Fulvio Mingozzi (as Commissioner Mingozzi), Carlo Gaddi (as Faina' - Gobbos Friend ), Alessandra Cardini, Livio Galassi (as Giggi - Gobbo's Friend ), Pierangelo Civera (as Agente Romeo Esposito), Nello Pazzafini (as Carmine Ciacci ), Franco Odoardi (as The Chief Psychiatrist ), Valentino Macchi (as Brigadiere), Roberto Caporali (as Man With White Suit At The Nightclub ), Rosario Borelli (as Romolo - Gobbo's Friend ), Fortunato Arena (as Male Nurse), Tony Morgan (as Monnezza's Stuttering Friend ), Cesare Di Vito (as The Psychiatrist With Slit Lamp), Mario Savini (as Milo's Friend With Moustache), Mario Piave (as Commissario Valenzi ), Tom Felleghy (as Questor), Ennio Antonelli (as Osvaldo Albanese), Bruno Di Luia (as Milo's Friend), Salvatore Billa (as Hitman), Massimo Bonetti (as Calogero Ciacci ), Riccardo Petrazzi (as Chauffeur ), Jimmy il Fenomeno (as Mentally Ill Man), Angelo Boscariol (as Male Nurse (uncredited)), Rossana Canghiari (as Woman In Nightclub (uncredited)), Aristide Caporale (as Citizen (uncredited)), Nestore Cavaricci (as Policeman (uncredited)), Alba Maiolini (as Borgatara (uncredited)), Giuseppe Marrocco (as Nightclub Barman (uncredited)), Taylor Mead (as Mentally Ill Man (uncredited)), Mimmo Poli (as Salvatore (uncredited)), Bruno Rosa (as The Manager Of The Nightclub (uncredited)), Luciano Zanussi (as Man In Nightclub (uncredited)) |
| Cinematographer | Federico Zanni |
| Costume Design | Alessandra Cardini |
| Director | Umberto Lenzi |
| Distributor | Medusa Distribuzione (as (1978) (Italy) (theatrical)), Iris (as (2016) (Italy) (TV)) |
| Film Editor | Eugenio Alabiso |
| Gaffer | Roberto Belli |
| Music | Franco Micalizzi |
| Musical Director | Alexander Blonksteiner |
| Producer | Luciano Martino |
| Production Company | Dania Film, Medusa Distribuzione |
| Soundtrack (????) (Italy) | Digitmovies Alternative Entertainment |
| Unit Manager | Marcello Tagliaferri |
| Voice Dubbing (US Version) | Carolyn De Fonseca (as (uncredited)), Michael Forest (as (uncredited)), John Gayford (as (uncredited)), Edward Mannix (as (uncredited)), Ted Rusoff (as (uncredited)), Robert Sommer (as (uncredited)), Robert Spafford (as (uncredited)), Frank von Kuegelgen (as (uncredited)) |
| Voice Dubbing: Luciano Catenacci | Luciano De Ambrosis (as (uncredited)) |
| Voice Dubbing: Mario Piave | Manlio De Angelis (as (uncredited)) |
| Voice Dubbing: Nello Pazzafini | Sergio Fiorentini (as (uncredited)) |
| Voice Dubbing: Sal Borgese | Renato Mori (as (uncredited)) |
| Voice Dubbing: Tomas Milian | Ferruccio Amendola (as (uncredited)) |
| Writer (Dialogue: 'Il Gobbo' And 'Er Monnezza') | Tomas Milian |
| Writer (Screenplay) | Umberto Lenzi |
| Writer (Story) | Umberto Lenzi |
| Links | https://www.imdb.com/title/tt0075720/?ref_=ttfc_fc_tt |
