House on Stone Quarry — Sally Tyree Smith

As far as she can remember, Kathy Darnell has hated Quarry House, the stark, gray tomblike structure that was once her home. Also, she has resented her divorced mother's marriage to Orian Phillips, former manager of the family estate. But when Althea--as her mother insists on being called--summons her in a pleading letter, Kathy reluctantly returns home for a visit.

Not only is the place as bleak as ever, but there is an icy new aura of fear in the air. There is the ominous knowledge that both her mother's life and her own are in danger. And, worst of all, in Kathy's darkest moment of terror, no one can help her, not even David Lindley, the handsome, exasperating stepbrother she loves desperately!