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...
Unfortunately the movie The Bloodstained Butterfly is not yet available on HBO Max.
| Writing | Gianfranco Clerici | Writer |
| Writing | Duccio Tessari | Writer |
| Directing | Duccio Tessari | Director |
| Writing | Edgar Wallace | Writer |
| Camera | Sandro Borni | Still Photographer |
| Costume & Make-Up | Paola Comencini | Costume Design |
| Camera | Carlo Carlini | Director of Photography |
| Camera | Sergio Martinelli | Camera Operator |
| Sound | Gianni Ferrio | Music |
| Directing | Vittoria Vigorelli | Script Supervisor |
