Guest in the house

Colonel St. George was definitely an unwanted guest as far as Mary Gould was concerned--but how could she throw out the charming, disturbing Englishman who had saved her husband's life? There was something secret and suspicious about him, something both heroic and roguish. Yet when the shadow of a monstrous horror darkened her life, the Colonel proved to be surprisingly adept in the fantastic and chilling climax to this fast-paced tale of suspense and brooding terror