These Old Shades

The story follows the Duke of Avon, known as Satanas, who rescues a mistreated boy named Léon from the streets of Paris, only to discover that Léon is actually a girl named Léonie. As Léonie becomes a source of amusement and intrigue among the aristocracy, the duke decides to take her to his sister in London to teach her the ways of women. However, he soon realizes that Léonie's true identity could be a powerful tool in his quest for revenge against his greatest enemy, leading to unexpected consequences.