Harlow Carrenwell, the poison-lipped youngest daughter of Lunameade's magical founding family, kills everyone she kisses, and her parents have made her their assassin. In secret, she moonlights as a vigilante hunting abusive men in their walled city.
Then one night she kisses a mark and he doesn't die. Worse, he is Henry Havenwood, her new betrothed, and now he knows about her double life. Instead of exposing her, he whisks her away to marry him in his wild mountain fort, surrounded by vampire-infested woods. To survive, Harlow must uncover what his family is planning and make the man who knows she's a killer fall in love with her.