The Queen's Necklace by Alexandre Dumas is a historical novel set in the opulent yet treacherous court of Louis XV in pre-revolutionary France. The story centers on the notorious Affair of the Diamond Necklace, in which the ambitious adventuress Jeanne de la Motte-Valois conspires with the mysterious Cagliostro to deceive Cardinal de Rohan. Exploiting the Cardinal's desperate desire to regain Queen Marie Antoinette's favor, Jeanne tricks him into purchasing a fabulously expensive diamond necklace, ostensibly for the Queen. As the fraudulent scheme unravels, scandal engulfs the monarchy, innocent lives are shattered, and public disdain for the crown deepens—foreshadowing the coming Revolution.
