When a young female student is savagely killed in a park during a thunderstorm, the culprit seems obvious: TV sports personality Alessandro Marchi, seen fleeing the scene of the crime by numerous eyewitnesses. The evidence against him is damning... but is it all too convenient? And when the killer strikes again while Marchi is in custody, it quickly becomes apparent that there's more to the case than meets the eye...
| Actor | Role |
|---|---|
 Helmut BergerGiorgio | Giorgio |
 Giancarlo SbragiaAlessandro Marchi | Alessandro Marchi |
 Ida GalliMaria Marchi | Maria Marchi |
 Wendy D'OliveSarah Marchi | Sarah Marchi |
 Günther StollAttorney Giulio Cordaro | Attorney Giulio Cordaro |
 Carole AndréFrançoise Pigaut | Françoise Pigaut |
 Wolfgang PreissThe Prosecutor | The Prosecutor |
 Lorella De LucaMarta Clerici | Marta Clerici |
 Silvano TranquilliInspector Berardi | Inspector Berardi |
| PPeter ShepherdThe Inspector's Assistant | The Inspector's Assistant |
 Gabriella D'OliveGabriella Giusti | Gabriella Giusti |
 Stefano OppedisanoNot listed | Not listed |
 Anna ZinnemannAnna Bellini | Anna Bellini |
 Dana GhiaGiorgio's Mother | Giorgio's Mother |
| FFederica TessariFederica Sartesi | Federica Sartesi |