Ty Hardin

Jason

Michael Rennie

Major Worthington Clark

Paola Pitagora

Greta

Vittorio Caprioli

Billy 'Pizza'

Gordon Mitchell

The Albanian

Vassili Karis

Giulio Coltellacci

Graziella Granata

Rumba

Ferdinando Poggi

Inspector Starkis

Hum Silvers

Remo De Angelis

Il bulgaro

Valentino Macchi

Gianni Di Segni

Bulgarian Henchman (uncredited)