In the rolling lowlands of eighteenth-century Scotland, Isabel Nivol is known for her fiery spirit, hot temper, and striking beauty. But when her father is accused of trespassing and theft by the occupant of a mysterious castle, Isabel's fortitude is tested as never before. Desperate to save her father from debtors' prison and her sisters from certain ruin, she strikes a daring bargain: her freedom for her father's release.

Luke Maxwell has fled his home in England in a hasty bid to outrun the dark magic that has made his life a misery. Confined within the ancient walls of Caerlaverock Castle, his only hope is to marry a woman who has made a sacrifice of love—a requirement that Isabel has now fulfilled. Convincing her to accept his hand should be an easy task for an English gentleman with means. Unfortunately, Luke's resolve to break the curse can be rivaled only by Isabel's determination never to marry. As they navigate their complicate arrangement, an unexpected friendship grows, but opening their hearts to a future they never thought possible will require that they first put their trust in God and heal from the shadows of their pasts.