De Luca is killed by Marchetti's chauffeur. Marchetti ordered the murder because he was to be accused by De Luca. The two have a car accident while going home to get an alibi. There is a witness, Sironi, who calls the police. But when the police arrive the car has gone and so have the two men. Inspector Santi and young judge Novelli look into the strange case. Marchetti, however, is a powerful man and Sironi and his family begin to be obsessed first by threats then by assaults.
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Bekim Fehmiu
Il dottor Giorgio Sironi
Rosanna Schiaffino
Luisa Sironi
Aldo Giuffrè
Il commissario Santi
Guido Leontini
Il mafiosi
Romolo Valli
Il ministro
Elio Zamuto
Il giudice Belli
Luigi Pistilli
Il commissario De Luca
Claudio Nicastro
Il commendatore
Guido Alberti
Il questore
Corrado Annicelli
L'anziano professore di Sironi
Barbara Betti
Adriana Favero
Rosario Borelli
Il maresciallo Giulio Nardoni
Franco Ressel
L'ingegner Aldo Marchetti
Liana Trouché
La moglie del commissario Santi
Daniele Vargas
Il senatore Turrisi
