Juan, Cesare, Lucrezia and Rodrigo Borgia were legendary figures in Renaissance Italy, noted for wealth, cunning, ambition, ruthlessness, scandal, incest, murder - and patronage of the fine arts. Were they mostrously corrupt, or were they victims of mons trous jealousy? This History Channel video visits locations in Spain and Italy, reviews contemporary artifacts and talks with historians who discuss their efforts to uncover the truth behind the tales. Narrator David Ackroyd.