Roma.During a clash between demonstrating laborers (whose fight the students have joined) a policeman and a student are both killed. The investigating magistrate - in charge of the case with two commissioners - wants to believe to the version of the police: the student was killed by one of the laborers, while the policeman would have been killed by Massimo Trotti.
| Actor | Role |
|---|---|
 Massimo RanieriFabio Sola | Fabio Sola |
 Martin BalsamGiudice Aldo Sola | Giudice Aldo Sola |
 Valentina CorteseLuisa Sola | Luisa Sola |
 Turi FerroCommissario Malacarne | Commissario Malacarne |
 Pino ColizziCommisario Alberto Cottone (as Giuseppe Colizzi) | Commisario Alberto Cottone (as Giuseppe Colizzi) |
 Salvo RandoneProcuratore Generale | Procuratore Generale |
 Luigi DibertiMassimo Trotti | Massimo Trotti |
| PPetra PaulyCarla Stale | Carla Stale |
 Mariano RigilloLuca Binda | Luca Binda |
 Carlo ValliAlfio Ricci | Alfio Ricci |