Naive American engineer Howard Graham (Joseph Cotton) is taken by a fellow employee to an Istanbul nightclub, where he becomes attracted to dancer Josette Martel (Dolores del Rio). An attempt to murder him results in the death of an unfortunate magician instead.
Newspaper magnate, Charles Foster Kane is taken from his mother as a boy and made the ward of a rich industrialist. As a result, every well-meaning, tyrannical or self-destructive move he makes for the rest of his life appears in some way to be a reaction to that deeply wounding event.
In 1500, Duke Cesare Borgia hopes to marry his sister (widowed by poison) to the heir apparent of Ferrara, which impedes his conquest of central Italy. On this delicate mission he sends Andrea Orsini, his sister’s lover and nearly as unscrupulous as himself. En route, Orsini meets Camilla Verano, wife of the count of Citta’ del Monte (Borgia’s next intended conquest); and sentiment threatens to turn him against his deadly master, whom no one betrays twice…