For millennia Silverthorne Priory has guarded the sisters' secrets allowing them to live in peace.

Fleeing Crozerat, the crazed warlock, the Silvers of Sharndock lead a life without magic. There are many things the Silvers fear; Crozerat finding them, using the gift, but most of all it is the fear of themselves and the power they own.

Behind a sea of mist and Priory walls, they hide; following a sober, solitary existence. The illusion is a success as they remain unnoticed and undiscovered; until Isabel. Descended of the Silver line, the young woman is not all she appears when she arrives seeking refuge. Isabel has secrets of her own. Shaken she could breach the mist and wards, the sisters take Isabel not to the Priory, as she’d hoped, but to the cairn. The fear which goads them demands to know if she’s friend or foe. During questioning Isabel’s spirit leaves her body and crosses to the Glade of Souls, a place of judgment for their kind.

The sisters' secrets start to unravel and they are forced to confront the dread in their hearts or perish at the hands of Crozerat.