All the plagues of hell

"Orkise is loose. The snake-god of plague has been awakened by Lucia del Maino, the bastard daughter of the recently overthrown duke of Milan, Phillipo Visconti. With the venomous magic of Orkise at her command, Lucia plots to marry and then murder the usurper who now rules Milan, the condottiere Carlo Sforza--known to friend and foe alike as the Wolf the North. Other trouble is brewing as well. Sforza has his own bastard, Benito Valdosta, who is...