Antonio Sabàto

Commissioner Fernando Solmi

Luciana Paluzzi

Inspector Giovanna Nunziante

Enrico Maria Salerno

Police Chief Carraro

Gabriele Ferzetti

Professor Andrea Icardi

Elio Zamuto

Professor Giacometti

Ettore Manni

Enrico Tummoli

Marino Masé

Franz Hekker - 'Francesco Pagano'

Franco Ressel

Gynaecologist

Margherita Horowitz

Antonietta - Icardi's maid

Valentino Macchi

Petrol Station Attendant