Virtually alone in a clifftop Georgian house, Judith Ardley becomes more and more frightened by a series of unnerving visits and phone calls. Each time, the sinister strangers asked the same question: "Where is your husband, Mrs. Ardley?" Where is Philip Ardley? And why does he take these mysterious trips, leaving no clue as to his purpose or destination. Desperate with fear and loneliness, Judith turns to Adam Quentin, a dear friend, for help. But Adam's words of comfort lead to words of love and when at last Judith's husband returns, she is not glad to see him. Philip is no longer the charming man she married. Now he is an enigma, and his presence heralds a new threat to the lives of his wife and their small son. In order to stay alive Judith has to find out what these tormentors want from her--and what Philip really is.