Solange Delacroix is a woman of dark secrets. She steals for Le Chacal, the King of Thieves, and is the mistress of the powerful and cruel Marquis de Vernoux. Orphaned as a child, along with her younger brother Gide, her life revolves around protecting him and surviving among cut-throat killers and power-hungry schemers in post-revolutionary Paris. But everything changes when she steals a moonstone pendant from the handsome Duke of Auriano.Antonio D'Este, Duke of Auriano harbors his own secrets. Cursed by the evil sorceress Nulkana, he's condemned to live half his life as Shadow. When a highwayman ambushes him and steals the magical moonstone that curbs the devastating effects of his family's curse, he is determined to find the thief and take back what is his. Attending a salon in Paris run by the ravishing Madame de Volonté, Solange's alias, he realizes she is the "boy" thief who stole from him. His need for revenge becomes entwined with desire for this beautiful woman.Antonio and Solange come together in a dangerous dance of secrets, thievery, and passion. Hounded by the evil Nulkana, threatened by the ruthless King of Thieves, menaced by the cruel Marquis de Vernoux, their safety hangs in a precarious balance. Antonio seeks a piece of the magical Sphere of Astarte that will end his curse. Solange seeks freedom for herself and her brother. But when their quests turn deadly, will their love help them survive?