 | Yul Brynner als Peter Marciani |
 | Massimo Ranieri als Angelo |
 | Barbara Bouchet als Anny |
 | Martin Balsam als Commissario |
 | Giacomo Furia als Brigadiere Cannavale |
 | Sal Borgese als Vincent |
 | Loris Bazzocchi als Pasquale |
 | Rosario Borelli als Gallo's henchman |
 | Luigi Bonos als Peppiniello |
| Renzo Marignano als Doctor |
| Giancarlo Sbragia als Gennaro Gallo |
| Gennaro Beneduce als Man at Police Station |
| Paul Costello als Desk clerk |
| Domenico Di Costanzo als Leonardi Bodyguard |
 | Gilberto Galimberti als Gallo Henchman (uncredited) |
| Gennaro Beneduce als Man at Police Station (uncredited) |
| Paul Costello als Desk clerk (uncredited) |
| Domenico Di Costanzo als Leonardi Bodyguard (uncredited) |
 | Franco Marino als Gallo Henchman (uncredited) |
| Edoardo Mascia |
 | Tommaso Palladino |
| Umberto Santolamazza als Gangster (uncredited) |
| Edoardo Mascia als Gallo Henchman (uncredited) |
| Tommaso Palladino als Gallo Henchman (uncredited) |
 | Liana Tabacchino als Wedding guest witnessing the groom's murder (uncredited) |
 | Vezio Natili als Gangster (uncredited) |
| Raymond R. Homer | Producer |
| Umberto Lenzi | Producer |
| Fima Noveck | Editor |
| Antonio Margheriti | Director |
| Guido De Angelis | Original Music Composer |
| Mario Morra | Editor |
| Maurizio De Angelis | Original Music Composer |
| Sergio D'Offizi | Director of Photography |
| Guy Castaldo | Writer |
| Corrado Cristofori | Hairstylist |
| Frank Caruso | Executive Producer |
| Lamberto Biseo | Makeup Artist |
| Antonella Berardi | Wardrobe Supervisor |
| Enrico Maggi | Camera Operator |
| Enrico Lucidi | Camera Operator |
| Mauro Paravano | Still Photographer |
| Aldo Bergamini | Camera Operator |
| Roberto Sterbini | Assistant Editor |
| Paolo Ricci | Special Effects |
| Pietro Spadoni | Sound Engineer |
| Augusto Dolfi | Unit Manager |
| Franco Rapa | Location Manager |
| Luciano Targuini | Prop Maker |
| Ignazio Dolce | Assistant Director |
| Angelo Spadoni | Boom Operator |
| Francesco Guerrieri | Unit Manager |
| Anna Onori | Seamstress |
| Eva Koltay | Continuity |
| Antonio Maccoppi | Second Unit Director of Photography |
