After imposing a controversial quarantine, Adelstadt Mayoress Mirabel Fairfax finds herself in the crosshairs with vengeful highwaymen. When they target her family and the vital shipments her village desperately needs, she turns to witchcraft to restore order herself. But something is wrong: her magic becomes unreliable, and monstrous images torment her mind's eye.
When gruesome murders terrorize Adelstadt, she suspects the highwaymen have turned to the occult, allying with a demonic entity. A Goetia. The hallucinations become all-too-real, and Mirabel must rely on her cunning, wrath, and what few friends she has left if she hopes to rescue her valley, her beloved, and her mind.
Felix Fairfax does the best he can as the husband of a controversial mayoress witch, but his life is once again turned into a fight for survival when he’s kidnapped by the highwaymen. They force him to help investigate his wife’s hidden lair, where they become trapped with creatures of unspeakable horror. Whatever Mirabel had locked away hunts indiscriminately—it hunts him—and if it gets out, plagues and highwaymen won’t be Adelstadt’s problems any longer.