Ian Pirie

Riario discusses his defeat with the pope and a mysterious prisoner; Leonardo searches for an explanation when the Medicis are blamed for an outbreak of demonic possession at a convent.

Lorenzo orders Piero da Vinci to defend his estranged son in court; Leonardo surprises the corrupt judge during a performance for visiting royalty; the Turk visits Leonardo at his workshop.

Bechhi is accused of spying for Rome; Leonardo reveals his latest weapon as the armies of Rome and Florence face off.