In 15th-century Rome, Cesare Borgia uses his sister Lucrezia as a political pawn, marrying her off to various noblemen to help unite Italy.

Edwige Feuillère
as Lucrezia Borgia

Gabriel Gabrio
as César Borgia

Maurice Escande
as Jean Borgia, Duke of Gandie

Roger Karl
as Rodrigo Borgia, Pope Alexander VI

Aimé Clariond
as Niccollo Machiavelli

Philippe Hériat
as Filippo, sculptor-lover

Jacques Dumesnil
as Giannino Sforza, Duke of Milano

Max Michel
as Alfonse de Aragon

Louis Eymond
as Capt. Mario, officer-lover

Jean Fay
as Tybald