The House on the Cliffs — Caroline Farr

A Touch of Evil. From the moment beautiful Trudy Page arrived at fortresslike Farland mansion, she sensed that something was amiss. Her friends Toni and Gene were off on a mysterious errand, and the servants whispered of hitchhikers and murder.

But suddenly real trouble descended on the brooding house. Trudy nearly lost her life in a rock slide, saved only by the quick action of handsome and mysterious Bruce Gallard, a painter with more than an artistic interest in Farland mansion and Trudy Page. Then Toni returned home alone, saying her brother Gene was being held by the police for questioning, and when Trudy tried to help, she was caught up in a nightmare world of terror, victim of an evil which no one could stop...