Bitters Wood — Ursula Nightingale

When pretty, young Madelyn Heald was accepted as companion to an old, infirm woman in Maine, her happiness was mixed with terror. For her sister, Sheila had taken the same job weeks before-and disappeared without a trace. Bitters Wood- the for-enshrouded mansion on the rock-bound coast-seethed with danger and foreboding, and the occupants of the house seemed to be hiding terrible secrets. And when an attempt was made on Maddy's life, only one person-the handsome Dr. Winton- come to her aid. All to soon, Maddy and Winton found themselves trapped in an ancient web of ritual terror, from which there was no escape, except death...