Antonio Sabàto

Character: Commissioner Fernando Solmi

Luciana Paluzzi

Character: Inspector Giovanna Nunziante

Enrico Maria Salerno

Character: Police Chief Carraro

Gabriele Ferzetti

Character: Professor Andrea Icardi

Elio Zamuto

Character: Professor Giacometti

Ettore Manni

Character: Enrico Tummoli

Marino Masé

Character: Franz Hekker - 'Francesco Pagano'

Bedy Moratti

Character: Emilia Icardi

Adriana Fiore

Character: Stripper

Franco Ressel

Character: Gynaecologist

Margherita Horowitz

Character: Antonietta - Icardi's maid

Tino Bianchi

Character: Police Commissioner

Valentino Macchi

Character: Petrol Station Attendant

Andrea Lala

Character: Marshall Attardi

Benedetto Benedetti

Character:

Mario Erpichini

Character: Minister Mordini

Anna Mirafiore

Character:

Adriano Amidei Migliano

Character: Dog team leader

Attilio Dottesio

Character: Forensic Doctor

Ida Di Benedetto

Character: House Madam

Leila Durante

Character: Nurse (as Leila Ducci)

Gloria Piedimonte

Character: Carla

Andrea Scotti

Character: Head of Scientific Team

Fernando Cerulli

Character: Morgue Watchman

Fulvio Mingozzi

Character: Police Inspector

Salvatore Billa

Character: Man in the city

Adriana Falco

Character: Fiorella Icardi

Ilona Staller

Character: Prostitute

Nestore Cavaricci

Character: Policeman (uncredited)