"I need a wife to save my name. You need a fortune to save your family. Let's make a deal with the devil." Arthur Devlin, the Duke of Ravenwood , is a man carved from shadows and scars. Returned from the Napoleonic Wars with a jagged spirit and a reputation for madness, he is a "Beast" who has retreated into the cold marble halls of his estate. When a greedy relative threatens to seize his title, Arthur needs a duchess to prove his sanity—and he needs her by the end of the Season. Elara Vance is a professional wallflower. Expert at blending into the wallpaper of Mayfair's most glittering ballrooms, she is the invisible daughter of a ruined gambler. When her father's debts push her family to the brink of the poorhouse, Elara does the unthinkable: she breaks into the Duke's library to steal. Instead of a thief's bounty, she finds a cold-blooded proposal. The Arrangement is Simple: The Debt: Arthur will clear every shilling of the Vance family's ruinous debt. The Deception: Elara must transform from a social pariah into a radiant duchess, performing a grand romance for the Ton's prying eyes. The Danger: No hearts involved. No lingering touches. No falling for the man behind the mask. But as the "Beast" and the "Wallflower" navigate a minefield of social sabotage, blackmail, and an old enemy's vengeance, the line between performance and passion begins to blur. Elara's sharp wit is the only thing that can pierce Arthur's armor, and his protective fury is the only thing that makes her feel seen. In a world of rigid etiquette and lethal secrets, can a fake engagement lead to a real redemption? Or will the ghosts of their pasts tear the contract—and their hearts—to pieces?