 | Barbara Bouchet als Greta Franklin |
 | Farley Granger als Richard Stuart |
 | Rosalba Neri als Eleanora Stuart |
 | Dino Mele als Sandro |
 | Umberto Raho als Giovanni il maggiordomo |
 | Patrizia Viotti als Sally Reece |
 | Nino Segurini als commissario Antonelli |
| Petar Martinovitch als Rocco |
| Bruno Alias als ospite festa |
| Silvio Amadio | Director |
| Italo Zingarelli | Producer |
| Teo Usuelli | Original Music Composer |
| Antonio Siciliano | Editor |
| Enzo Bulgarelli | Art Direction |
| Silvio Amadio | Story |
| Silvio Amadio | Screenplay |
| Roberto Palaggi | Executive Producer |
| Aldo Giordani | Cinematography |
| Franco Schioppa | Makeup Artist |
| Ruggero Cappelli | Production Manager |
| Ezio Palaggi | Executive In Charge Of Production |
| Claudio Vinale | Production Manager |
| Mario Mastrogiacomo | Assistant Set Dresser |
| Franco Groppioni | Sound |
| Enrico Fontana | Assistant Camera |
| Angelo Lannutti | Camera Operator |
| Lucia Melis | Assistant Editor |
| Teo Usuelli | Music Director |
| Edda Dell'Orso | Vocals |
