The fifth volume of the Collected Works of R. Sabatini presents two of his works, united by one main character - the famous Italian military and political figure of the Renaissance Cesare Borgia. The first work is an original historical study, presented in the form of an artistic biography. The author set out to debunk the current idea of the Borgia family as a bunch of murderers, debauchees and dishonest intriguers. “The Duke's Court” is a collection of short stories. Cesare Borgia appears in them as a cunning military leader, a far-sighted sovereign, a fair judge, rewarding good and evil deeds.