Mattie Summers is caught in the throes of an abusive marriage. A gentle, sensitive soul, Mattie separates from her husband John after physical and emotional turmoil. She retreats to Maine on vacation, exchanging her Arizona home for a 19th-century house on rocky cliffs overlooking the Atlantic. Alone and five miles from the town of Rexford, Mattie is harassed by eerie phone calls on the old rotary dial phone. McCabe, owner and manager of many local properties, helps Mattie with her broken down rental car and with problems around the Exchange House. McCabe takes Mattie out on a date but she finds evidence that her estranged husband is in the area. A weird mechanic stalks her. As a fierce storm hits the area, someone on the property cuts the phone wires and Mattie is forced to flee for her life. Not until the final moments with her life in the balance-does the identity of the assailant become evident.