| Actor | Role |
|---|---|
 Mario ColliPrivate Investigator | Private Investigator |
 Ria De SimoneAmalia | Amalia |
 Alena PenzBlond Doctor | Blond Doctor |
 Sofia DionisioAnalyst | Analyst |
| EEva Maria GabrielRenzi | Renzi |
 Gina GiuriNot listed | Not listed |
 Gino PagnaniInvestigator's Assistant | Investigator's Assistant |
| DDario De GrassiAntenore Onorato | Antenore Onorato |
 Gianni SolaroAngelo Bortolotti | Angelo Bortolotti |
 Eolo CaprittiVon Stronfen | Von Stronfen |
 Giovanni CarpinteriClinic Director | Clinic Director |
| GGiovanna ChemeriNot listed | Not listed |
| AAldo SistiNot listed | Not listed |
 Tommy PolgárAnacleto | Anacleto |
 Roberto VerrocchiYoung Doctor | Young Doctor |
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