One Rolls-Royce belongs to three vastly different owners, starting with Lord Charles, who buys the car for his wife as an anniversary present. The next owner is Paolo Maltese, a mafioso who purchases the car during a trip to Italy and leaves it with his girlfriend while he returns to Chicago. Finally, the car is owned by American widow Gerda, who joins the Yugoslavian resistance against the invading Nazis.

Ingrid Bergman
as Gerda Millett

Rex Harrison
as The Marquess of Frinton

Alain Delon
as Stefano

George C. Scott
as Paolo Maltese

Jeanne Moreau
as The Marchioness of Frinton

Omar Sharif
as Davich

Shirley MacLaine
as Mae Jenkins

Art Carney
as Joey Friedlander

Joyce Grenfell
as Hortense Astor

Edmund Purdom
as Fane