Humphrey Bogart

Billy Dannreuther

Jennifer Jones

Gwendolen Chelm

Gina Lollobrigida

Maria Dannreuther

Robert Morley

Peterson

Peter Lorre

Julius O'Hara

Edward Underdown

Harry Chelm

Ivor Barnard

Maj. Jack Ross

Marco Tulli

Ravello

Bernard Lee

Insp. Jack Clayton

Giulio Donnini

Administrator

Saro Urzì

Captain of SS Nyanga

Juan de Landa

Hispano-Suiza Driver

Aldo Silvani

Charles

Mimmo Poli

Barman (uncredited)

Peter Sellers

Billy Dannreuther (voice) (uncredited)