George Hilton as Inspector Luca Peretti

Salvo Randone as Chief Marò

William Berger as Giorgio Canavese

Marilù Tolo as Dr. Anna Borgese

Manuel Zarzo as Brigadier Bozzi (as Manolo Zarzo)

Patty Shepard as Paola Rossi, the teacher

Piero Lulli as Alessandro Moroni

Helga Liné as Mrs. Paradisi

Tullio Valli as Oliviero Moroni

Dante Maggio as Mattia Guardapelle

Dana Ghia as Eleonora Moroni

Alfredo Mayo as Beniamino

Mónica Randall as Carla Moroni

Corrado Gaipa as Head of Insurance Company

Lara Wendel as Stefania Moroni (as Daniela Rachele Barnes)

Francesco Di Federico as Vincenzo Paradisi

Lola Gaos as Adele Rudigiani

Sergio Mendizábal as Rag. Civitelli

Sofia Dionisio as Servant at Moroni's home

Luigi Antonio Guerra as Postman witness

Elisa Mainardi as Servant at Moroni's home

Enzo Fiermonte as Jib crane owner

Annamaria Chio as Woman witness in post office

Antonio Spaccatini as Silvestri

Guerrino Crivello as Barman at Bar Latteria

Andrea Scotti as Witness in post office

Pietro Ceccarelli as Giorgio Canavese's Bodyguard (uncredited)

Jean-Pierre Clarain as Driver in Moroni's Home (uncredited)

Remo De Angelis as Mario Ansuini (uncredited)

Giuseppe Marrocco as Policeman in the Ansuini Crime Scene (uncredited)

Sergio Testori as Kidnapper (uncredited)