 | John Cassavetes als Hank McCain |
 | Britt Ekland als Irene Tucker |
 | Peter Falk als Charlie Adamo |
 | Gabriele Ferzetti als Don Francesco DeMarco |
 | Pierluigi Aprà als Jack McCain |
 | Luigi Pistilli als Duke Mazzanga |
 | Margherita Guzzinati als Margaret DeMarco |
 | Claudio Biava als Barclay |
| Steffen Zacharias als Abe Stilberman |
| James Morrison als Joby Cuda |
 | Florinda Bolkan als Joni Adamo |
 | Tony Kendall als Pete Zacari |
 | Salvo Randone als Don Salvatore |
 | Gena Rowlands als Rosemary Scott |
| Maria Mizar |
| Euplio Moscusu |
 | Mirella Pamphili |
| Raffaele Triggia |
| Gaetano Imbró |
 | Silvana Bacci |
| Franco Riti |
| Jack Ackerman als Britten (uncredited) |
| Annabella Andreoli als Assunta Esposito (uncredited) |
 | Val Avery als Chuck Regan (uncredited) |
 | Carla Brait als Nightclub Singer (uncredited) |
| Dan Gregory als The Baby Faced Killer (uncredited) |
| Werner Hasselmann als Sheriff (uncredited) |
| Dennis Sallas als Fred Tecosky (uncredited) |
| Ovid Demaris | Novel |
| Giuliano Montaldo | Director |
| Mino Roli | Writer |
| Flavio Mogherini | Production Design |
| Erico Menczer | Director of Photography |
| Ennio Michettoni | Set Decoration |
| Emilio Baldelli | Art Direction |
| Michele Trimarchi | Makeup Artist |
| Fabrizio Gianni | Assistant Director |
| Franco Fraticelli | Editor |
| Roberto Velocchio | Art Direction |
| Ennio Morricone | Original Music Composer |
| Agostino Pascatti | Production Manager |
| Enrico Sabbatini | Costume Design |
| Marco Vicario | Producer |
| Flavio Mogherini | Set Decoration |
| Bino Cicogna | Producer |
| Giancarlo De Leonardis | Hairstylist |
| Romano Cardarelli | Production Manager |
| Giuliano Montaldo | Writer |
