It Comes by Night — Clarissa Ross

Joan Hudson had never been to the southwestern United States before her marriage to Viet Nam veteran, Cliff Norell. Like almost all visitors, she found the country of deserts and mountains breathtaking in its beauty - and overwhelming in its sense of loneliness, its awe-inspiring ability to reduce a person to a feeling of insignificance before the majestic and uncaring powers of Nature.

But for Jean, the desert was to harbor more: her arrival at her new home was the beginning of a nightmare that never seemed to end! Soon she was ready to believe that she had come to the desert only to die, for the hand of someone - or something - had turned against her. And no matter where she looked, help could not be found....