 | Jean Valmont als Marcel Mauriac |
 | Krista Nell als Greta Nielsen |
 | George Patton als Commissario |
| John Benedy als Robert Servais (as John Bennedy) |
 | Tullio Altamura als LeClerc (as Tor Altmayer) |
 | Aldo Bufi Landi als Charles Clancy |
| Antonio De Leo als Louis (as Tony De Leo) |
| Franco Jamonte |
| Ugo Adinolfi als (credit only) |
 | Franco Pasquetto als Michel |
| Gianni Pulone als (credit only) |
 | Franco Ressel als Mr. Wilkins |
 | Fabienne Dali als Josette |
| Franco Montemurro | Director |
| Walter Patriarca | Costume Design |
| Angelo Francesco Lavagnino | Original Music Composer |
| Georges Reville | Screenplay |
| Jolanda Benvenuti | Editor |
| Fortunato Misiano | Editor |
| Gianfranco Clerici | Screenplay |
| Augusto Tiezzi | Director of Photography |
| Franco Montemurro | Screenplay |
| Pier Vittorio Marchi | Art Direction |
| Mirella Malatesta | Script Supervisor |
| Nino Misiano | Production Manager |
| Enrico Betti Berutto | Camera Operator |
| Renato Mascagno | Assistant Camera |
| Jean Lefèvre | Assistant Director |
| Fortunato Misiano | Producer |
| Gianfranco Clerici | Assistant Director |
| Elio Saroli | Unit Manager |