In the back garden of Fier Estate lies buried a tragic secret, and there lurks a spectral victim so deeply scarred that no living woman can satisfy his demands. The Grant sisters, reserved, competent Caroline and spritely, silver-haired Lottie are tasked with the cryptic last request of their beloved grandmother to: "Revive the tormented soul of Fier." Now they must cross the Atlantic, from Manhattan to the top of a cursed Scottish moorland. Looking forward to independence, adventure, and men wearing kilts, the girls instead find they have inherited roles in a gruesome legend. Atop their Highland cliffs, a long dead lover impatiently waits for his mistress to return...and his heart is black as jet.