Scottish marauders, incensed at England's King Charles I and emboldened after achieving the upper hand in the Bishop's War of 1640, wreak havoc on the inhabitants of Northumberland, England, and Lady Mariel Hayes finds herself at the mercy of the land hungry Baron Harold Flanders after her father is killed in a border raid. Powerless to save herself from being forced to wed the vile Flanders, Mariel prays for divine intervention. But when her salvation comes, it proves more terrifying than comforting as Mariel learns that by order of the crown, she is to wed the dark and mysterious Baron Gervace Daltry, known far and wide as the Hound of Hell.
Mariel seeks to accept this new life with her dark Baron, a man whose secrets haunt her even as his touch inflames her body. But before her mind can reconcile the sinner she knows him to be with the seductive lover she willingly surrenders to, Mariel must confront the fears that whisper to her, as evidence mounts that her life may soon be forfeit, and decide whether to trust the man she begins to love, or betray the man rumored to be the Devil's instrument of destruction.