Da Vinci's Demons is a historical fantasy drama series that presents a fictional account of Leonardo da Vinci's early life. The series was conceived by David S. Goyer and stars Tom Riley in the title role. It was developed and produced in collaboration with BBC Worldwide and was shot in Wales. The series has been distributed to over 120 countries. The show follows Leonardo as he is implicated in the political schemes of the Medici and Pazzi families and their contrasting relationships with the Catholic Church. These events occur alongside Leonardo's quest to obtain a mystical text called the Book of Leaves, which leads him to become entangled with a cult known as the Sons of Mithras. The series premiered in the United States on Starz on 12 April 2013, and its second season premiered on 22 March 2014. The series was renewed for a third season, which premiered on 24 October 2015. On 23 July 2015, Starz announced that the third season would be the show's last. However, Goyer has left it open for a miniseries return. Plot A fictionalised story based on historical persons, the series explores the early life of Leonardo da Vinci during the Renaissance in Italy. He is an eccentric genius who has struggled to deal with his inner demons and unruly imagination, as he yearns for acceptance from his estranged father. Their sometimes antagonistic relationship results in Leonardo's working for the House of Medici. While doing so, he becomes embroiled in a political scheme to control Florence, as he hunts for a spy who is revealing information to the Catholic Church and the Pazzi family. He also begins an affair with Lucrezia Donati, Lorenzo de' Medici's mistress. The series depicts many of Leonardo's inventions and subsequent works as a military engineer for the Duke of Milan and the Borgias. These events coincide with Leonardo's quest to uncover the Book of Leaves, which a mysterious cult known as the Sons of Mithras also consider very important. Mystics and the cult guided him to unlock the 'hidden areas of his mind' by accessing the Fountain of Memory, and inform him that he has the power to see the future and also to shape it. In terms of historical accuracy, the show is highly fictionalized, and this is already (and deliberately) made explicit the first episode, playing 1475–1476 (persecution for sodomy 1476; before the Pazzi conspiracy of