Humphrey Bogart (Billy Dannreuther), Gina Lollobrigida (Maria Dannreuther), Jennifer Jones (Gwendolen Chelm), Robert Morley (Peterson), Peter Lorre (Julius O'Hara), Marco Tulli (Ravello), Ivor Barnard (Jack Ross), Edward Underdown (Harry Chelm), Bernard Lee (Jack Clayton), Mario Perrone (Purser on SS Nyanga), Giulio Donnini (Administrator), Saro Urzì (Captain of SS Nyanga), Juan DeLanda (Hispano-Suiza Driver), Aldo Silvani (Charles - Restaurant Manager), Dave Crowley (Hotel Manager), Julie Gibson (Barman), Alex Pochet (Billy Dannreuther), Mimmo Poli (Ahmed - Arab Inquisitor), Peter Sellers (), Manuel Serano ()