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.
as Il dottor Giorgio Sironi
as Luisa Sironi
as Il commissario Santi
as Il mafiosi
as Il ministro
as Il giudice Belli
as Il commissario De Luca
as Il commendatore
as Il questore
as L'anziano professore di Sironi
as Adriana Favero
as Il maresciallo Giulio Nardoni
as L'ingegner Aldo Marchetti
as La moglie del commissario Santi
as Il senatore Turrisi
as Il sergente Cannavale
as Antonio - un teppista
as Il cancelliere (as Mimmo Maggio)
as Un picchiatore
as Cristina Sironi
as Un funzionario
