Miranda's Curse — Dorine Moore

The Castello Veraldo, ancestral home of the wealthy Andrade family, lay as a distant specter, symbol of the happiness Penelope had found in the love of Gil Andrade, scion of the aristocratic, Portuguese clan. Now she would enter it as his bride, and she wondered what awaited her within the staid, old-world walls.

But Penelope arrived as a widow, aware that Gil's death had been no accident, and that his enemy -- and hers -- was close at hand. Oppressed by the gloomy Castello, her spirit stifled by the family's cool formality, she was aware that she was an outsider…endangered by the Andrade menace: the mysteries of the living and the threatening, ancient curse of the long dead.