After her cousin Mary is mysteriously swept away by the sea, Cassiopeia journeys to the Killdaren estate in Dartmouth, England, disguised as a chambermaid, to uncover clues. What she discovers is the estate's enigmatic owner, Sean Killdaren, and the eerie family curse that he bears. As details of Mary's fate elude her, the shroud of darkness that Sean has created is luring Cassie in