 Richard BasehartDoctor Stefano Luprandi | Doctor Stefano Luprandi |
 Eddie ConstantineFranco Cesari | Franco Cesari |
 Walter ChiariGiuseppe Rasi | Giuseppe Rasi |
 Antonella LualdiGiovanna, the nurse | Giovanna, the nurse |
 Valentina CorteseLuprandi's wife | Luprandi's wife |
 Arnoldo FoàThe boss | The boss |
| FFlora LilloAnna, Cesari's woman | Anna, Cesari's woman |
 Luigi TosiPolice commissioner | Police commissioner |
 Ferruccio AmendolaJournalist | Journalist |
 Emma BaronMother of Giuseppe | Mother of Giuseppe |
 Gino BramieriSAI Employee | SAI Employee |
 Roberto BruniStefano colleague | Stefano colleague |
| AAldo De FranchiNot listed | Not listed |
 Gil DelamareMarini | Marini |
 Bianca DoriaWidow | Widow |
| AArturo GalleaNot listed | Not listed |
| FFranca GandolfiClara | Clara |
 Nino MarchesiniChairman of the committee | Chairman of the committee |
| NNino MarchettiLawyer Cesare Valloni | Lawyer Cesare Valloni |
| DDino MaronettoNot listed | Not listed |
 Nico PepeLawyer who meets Luprandi | Lawyer who meets Luprandi |
| AArrigo PeriNot listed | Not listed |
 Ernesto SabbatiniMazzanti | Mazzanti |
| WWando TresNot listed | Not listed |
