Franco Sereni, a captain of carabiniers, is dismissed from service for being the proponent of "the law of the gun". He is asked to hold a private investigation of several cases of blackmailing wealthy women. Soon Sereni finds out that there is much more then just blackmailing.
| Actor | Role |
|---|---|
| CCalogero CaruanaSereni | Sereni |
 Antonella DoganMarta | Marta |
 Alicia LeoniFlavia | Flavia |
| SSpartaco BattistiRighi | Righi |
 Al CliverRoberto Mauri | Roberto Mauri |
 Richard HarrisonAugusto | Augusto |
| SSimonetta MariniHelen | Helen |
| DDaniela CodiniNadja | Nadja |
 John BenedyMarco Ristelli | Marco Ristelli |
 Marcello MeconizziNot listed | Not listed |
 Sergio TestoriNot listed | Not listed |
 Mario BianchiNot listed | Not listed |
 Cesare Di VitoNot listed | Not listed |
 Guia Lauri FilziNot listed | Not listed |
 Saverio MoscaMr. Finzi | Mr. Finzi |