Humphrey Bogart

Character: Billy Dannreuther

Jennifer Jones

Character: Gwendolen Chelm

Gina Lollobrigida

Character: Maria Dannreuther

Robert Morley

Character: Peterson

Peter Lorre

Character: Julius O'Hara

Edward Underdown

Character: Harry Chelm

Ivor Barnard

Character: Maj. Jack Ross

Marco Tulli

Character: Ravello

Bernard Lee

Character: Insp. Jack Clayton

Mario Perrone

Character: Purser on SS Nyanga

Giulio Donnini

Character: Administrator

Saro Urzì

Character: Captain of SS Nyanga

Juan de Landa

Character: Hispano-Suiza Driver

Aldo Silvani

Character: Charles

Mimmo Poli

Character: Barman (uncredited)

Peter Sellers

Character: Billy Dannreuther (voice) (uncredited)

Manuel Serrano

Character: Ahmed (uncredited)