Pier Paolo Capponi as Mister X

Gaia Germani as Timy

Armando Calvo as George Lamarro

Anna Zinnemann as Dolly

Umberto Raho as Jack MacDougall

Renato Baldini as Antonio 'Joe' Caruso

Franco Fantasia as Inspector Roux

Antonio Gradoli as Commissioner Sebastian

Nieves Salcedo as Veronica Strindberg

Pino Polidori as Lembus

Brizio Montinaro as Younger Henchman

Gaetano Quartararo as Commissioner Mariotti

Gustavo Simeone as

Ben Braien as

Costanza Strina as

Giancarlo Prete as Lamarro Henchman

Dante Posani as Jim

Helga Liné as Gloria

Fulvio Mingozzi as Party Guest (uncredited)

Francesco Narducci as Sergeant Joe (uncredited)