 | Barbara Steele als Muriel Arrowsmith / Jenny Arrowsmith |
 | Paul Müller als Dr. Stephen Arrowsmith |
 | Helga Liné als Solange |
 | Marino Masé als Dr. Dereck Joyce |
 | Giuseppe Addobbati als Jonathan, the Butler |
 | Rik Battaglia als David |
| Carlo Caiano | Producer |
| Enzo Barboni | Director of Photography |
| Mario Caiano | Director |
| Ennio Morricone | Original Music Composer |
| Renato Cinquini | Editor |
| Mario Caiano | Story |
| Mario Caiano | Screenplay |
| Duilio Giustini | Makeup Artist |
| Angelo Sangermano | Assistant Director |
| Mario Caiano | Dialogue |
| Massimo Tavazzi | Set Decoration |
| Fabio De Agostini | Dialogue |
| Fabio De Agostini | Story |
| Fabio De Agostini | Screenplay |
| Pietro Nofri | Supervising Producer |
| Massimo Tavazzi | Production Designer |
| Ermanno Serto | Still Photographer |
| Ennio Morricone | Conductor |
| Carlo Caiano | Production Manager |
| Mario Mancini | Camera Operator |
| Priscilla Contardi | Continuity |
| Mario Giorsi | Costume Designer |
| Pietro Nofri | Production Assistant |
| Bernardino Fronzetti | Sound Engineer |
