House of Treachery — Caroline Farr

Black Despair overwhelmed lovely young Kirsten Willard at the thought of living on at Quilty, the gloomy old family mansion, now that her mother was gone. Left alone with her stern old grandfather and his housekeeper, Anna -- the woman Elise Willard had hated and repeatedly warned her daughter against -- Kirsten knew that the house in which she had grown up was no longer her home. Only in Boston, at her aunts apartment, could Kirsten find peace of mind. And besides, Damien was in Boston -- handsome Damien, her childhood playmate and the man she had grown to love.

Kirsten wished never again to see Quilty and the grandfather with whom she had quarreled so bitterly. But against her will she was drawn back there to the bedside of a dying old man and into the presence of a terrifying evil which had claimed her family one by one and had marked her as the next and final victim...