The Changeling — Margaret Higgins

When Ann Quinn answered the advertisement, she described herself honestly-a schoolteacher who just recuperated from a mental breakdown-and therefore assumed she would not get the job. Handsome Miles Tredynnick, however, seemed most anxious to hire her as governess to his nine-year-old Griselda, his late wife's daughter, a somewhat unusual child whom everyone shunned. Determined to begin a new life, Ann accepted the position-and found herself pitted against a terrifying evil that threatened the sanity she had fought so hard to regain. The possession of a child's soul was the prize. Death was the weapon...