Alida Valli
as
Countess Alessandra Mirafiori
Giorgio Albertazzi
as
Father
Donald Pleasence
as
Professor Robinson
Stelvio Massi
Director
Lorenzo Piani
as
Francis Matthews
as
Giorgio Pisani
Tom Felleghy
as
Newspaper Editor-in-Chief
Giorgio Albertazzi
as
Professor Aldo Betti
Giorgio Albertazzi
as
Don Pietro
Orson Welles
as
Narrator
Emilio Cigoli
as
Narrator
Françoise Bertin
as
Un personnage de l'hôtel
Giorgio Albertazzi
as
X - l'homme à l'accent italien
Giorgio Albertazzi
as
L'inquilino / Narratore
Marcello Mastroianni
as
Mario