"From here Grayson couldn't see the funeral pyres choking London, but there was not lack of that sickening flame along the countryside. Since the plague, ash suffocated England."
And here is the Goodreads summary:
The once glittering ballrooms of Regency England now lay desolate. A plague has ravaged the countryside. The government has fallen. What vestiges of order remained have been consumed by the endless funeral pyres.
Grayson, once the Baron of Harwich, sought only to protect his people. Rescuing a half-dead woman was not among his plans. But something about her pulled at him. Perhaps it was her beauty, still evident beneath the pallor of loss. Perhaps it was the recently fired rifle at her side. Or maybe he simply tired of death. All he knew was that the plague had taken too much already. He couldn’t let it take her as well.
Lady Juliette Adair had been ready to die with her brother. She didn't expect to be shown mercy in a world that had no room for mercy. When Grayson saved her she questioned his motives but soon found herself intrigued by him, drawn to him.
Societal rules were a thing of the past, dead along with the ton. Juliette had no manner by which to measure her growing closeness to Grayson any longer. But when she discovers he may not be the man she thought she knew more is at stake than just her heart. The secrets she carries could make a king or destroy one.