Season 3
Leonardo da Vinci's world comes crashing down when the city of Otranto is torn apart by an Ottoman invasion. On the battlefield, the Turks use da Vinci’s own weapons against him… the designs for which were stolen by someone he trusted. This betrayal will haunt Leo long after the battle is decided, as will the deaths of loved ones lost in the fighting. When Rome instigates a Crusade against the Turks, he seizes the opportunity to join, but his mission is complicated by a series of grisly murders that terrorize Italy and threaten the Crusade itself.
Semper Infidelis
Leonardo and his allies are forced to retreat when the Ottoman Empire storms the city of Otranto.
Abbadon
Leo devises an escape from Otranto but may not be able to save those closest to him.
Modus Operandi
Leonardo investigates a horrific murder that may result in the Labyrinth being exposed.
The Labrys
Carlo's attempt to program Leonardo into becoming "one" with the Labyrinth leads him to slip into an alternate reality that could prove life-threatening.
Anima Venator
A paranoid Leonardo becomes shut off from his friends, while an endangered Lucrezia searches for a way to make amends for past sins.
Liberum Arbitrium
The Monster of Italy is captured but not all is safe as danger still lurks and poses a threat to the upcoming Crusade Festival.
Alis Volat Propiis
A former nemesis returns to Florence and stands in opposition to Crusade efforts. Vanessa and Nico ponder their futures; Leo attempts to decipher the Turkish armor.
La Confessione Della Macchina
Nico and Zoroastre turn to an old enemy to gain support for the Crusade. Leo is ambushed by the Labyrinth.
Angelus Iratissimus
Leo and Sophia struggle to control the mysterious device they've built. Back in Florence, Riario awaits judgment while Lorenzo and Vanessa take their partnership to the next level.
Ira Deorum
Leo must put his faith in his friends and in himself to have a chance to defeat the Turks.