Hungerstone by Kat Dunn

Lenore is the wife of steel magnate Henry, but ten years into their marriage the relationship has soured, and no child has arrived to fill the distance growing between them. Henry's ambitions take them from London to the Peak District, to the remote, imposing Nethershaw estate, where he plans to host a hunting party. Lenore must work to restore the crumbling house and ready it for Henry's guests - their future depends on it.

But as the couple travel through the bleak countryside, a shocking carriage accident brings the mysterious Carmilla into Lenore's life. Carmilla, who is weak and pale during the day but vibrant at night, Carmilla who stirs up something deep within Lenore. And before long, girls from the local villages fall sick, consumed by a terrible hunger . . .

As the day of the hunt draws closer, Lenore begins to unravel, questioning the role she has been playing all these years. Torn between regaining her husband's affection and the cravings Carmilla has awakened, soon Lenore will uncover a darkness in her household that will place her at terrible risk . . .