The dramatic events of the composer Mario Sirchi, falsely accused of murder, and his girlfriend Adonella who is revealed to have a secret sister, Nayda.
| Actor | Role |
|---|---|
 Francesca BertiniNayda | Nayda |
| VVittorio BianchiNayda's father | Nayda's father |
| EEmma FarnesiAdonella | Adonella |
| LLuigi CigoliNot listed | Not listed |
| RRaoul MaillardNot listed | Not listed |
| DDuilio MarrazziNot listed | Not listed |
| SSandro SalviniMario Sirchi | Mario Sirchi |