Ruth, the Unsuspecting — Katheryn Kimbrough

When incredibly lovely young Ruth Eldridge came to Boston to be guest of the proud and passionate Phenwick clan, she little suspected the strange, terror-haunted labyrinth she was entering. But all too soon she learned what emotions seethed beneath the masks of respectability that the Phenwicks wore, and what evil lurked behind the ease and elegance of their lives.

The Phenwicks were bitterly divided now, brother against sister, husband against wife, as illicit love made a mockery of all morality, and jealousy and greed poisoned every blood tie. Ruth was welcomed into this family circle with open arms - only to be held fast in the embrace of a Phenwick man who offered her only betrayal, and plunged into a nightmare that made her the most defenseless and endangered of all the Phenwick women...