Alchemists, Bishops and Courtesans, oh my!

From the introduction: A cocky young noble, his tutor, a beautiful courtesan, an alchemist's apprentice, a struggling artist and a merchant wanted for murder. All of their destinies become entwined when Edmundo Brunetti, the eccentric Alchemist and scholar is abducted and a they are embroiled in a dangerous conspiracy and forced to enter a world of arcane lore, mysteries and sinister bankers: set against the back-drop of Florence at the height of the Italian Renaissance.