Gianna Maria Canale as Giselle du Grand / Margherita du Grand

Carlo D'Angelo as L'ispettore Chantal

Dario Michaelis as Pierre Lantin

Paul Müller as Joseph Signoret

Wandisa Guida as Laurette Robert

Angelo Galassi as Ronald Fontaine

Renato Tontini as L'assistente del professore Grand

Charles Fawcett as Signor Robert

Gisella Mancinotti as Amica di Laurette

Miranda Campa as Signora Robert

Antoine Balpêtré as Professor Julien du Grand

Armando Annuale as Un uomo anziano al funerale (uncredited)

Riccardo Freda as Il dottore (uncredited)

Al Lewis as Assistant (uncredited)

Emilio Petacci as L'antiquario (uncredited)

Barbara Wohl as Lisette (uncredited)