The Towers of Fear — Caroline Farr

TERROR, LIKE COLD FOG, ENVELOPED THE HOUSE... To Storm Towers, the brooding mansion of the wealthy and influential Hailsworth family, came lovely black-haired Ali Cavanaugh on a visit to her former college friend, Joan, young daughter of the house.

Almost at once Ali was drawn into the web of mystery that encircled the Hailsworth family: Joan, strangely remote, was locked in her private nightmare world: Ursula, whose relationship with Joan held sinister undertones; Monty, the handsome playboy, who attracted Ali yet frightened her by his strange behavior; Donald, whom Ali longed to trust but didn't dare. And then there was the real reason for his unexpected presence in the mansion?

All were captive to the fear that filled the vast halls of the old house where an unknown intruder prowled the hidden corridors. The silent menace grew until one fearful night when Ali found herself struggling against a faceless evil that threatened her sanity -- and her life -- and Storm Towers revealed its shocking secret....