Amazon Studios has cast its yet-untitled original series about Giacomo Casanova, the famous 18th Century lover, and set France’s Jean-Pierre Jeunet (“Amelie,” “A Very Long Engagement”) to helm the original series. Mexico’s Diego Luna (“Y Tu Mamá También,” “Milk”) will star as Casanova, with other key cast to include Ben Daniels (“House of Cards,” “Locke”)...