She's hours from the guillotine, and she's the only one who knows how this story ends. Adeline Moore opens her eyes on the freezing stone floor of an imperial cell and realizes she has transmigrated into the novel she once read. Worse, she is the villainess, the noblewoman executed at dawn for poisoning Grand Duke Cassian, the most feared man in the Empire. The evidence is absolute. The blade is sharpened. The guards are waiting. But this villainess has read the book. She knows the poison was a setup, and she knows who the real conspirators are and when they will strike. When Cassian arrives to watch his wife's final moments, expecting tears, Adeline gives him a lethal smile instead. She offers a bargain: the names of the traitors who will kill him, in exchange for her life. Intrigued by the razor-sharp defiance of the wife he thought he knew, Cassian stays the executioner's hand. But he trusts no one, and every secret she reveals proves she knows far too much. In a story where she was never meant to survive, Adeline must keep him alive, keep him believing her, and keep him from learning how she really knows. Can she rewrite her tragic ending, or will her newest executioner steal her heart before he takes her head?