"The queen's necklace" by Alexandre Dumas and Auguste Maquet is a novel published in 1849 and 1850. Loosely based on the infamous Affair of the Diamond Necklace that scandalized Louis XVI's court, the story unfolds between 1784 and 1785. The mysterious Count Cagliostro pulls the strings behind a web of fraud and royal intrigue. As the novel opens with prophetic warnings of doom, readers know that even the queen's desperate attempts to prove her innocence may be destined to fail. (This is an automatically generated summary.)