G.C. Scott 
House Rules [EPUB ebook] 

An Englishman meets a demanding mistress in this adventurous erotic novel.   In this steamy story of bondage and abandon, Richard, an Englishman in Hamburg, discovers carnal riches beyond his imagination when Margaret Wagner introduces him to her beautiful niece, Helena, and draws him into their rituals of kink—everything from cross-dressing to sexual slavery.   Richard feels more alive than ever before—but grows increasingly disturbed by the magnitude of Margaret’s hold over the submissive young Helena. His attempts to rescue her are thwarted, perhaps even unwanted. So Richard finds himself in the tutelage of another of Margaret’s sexually adept associates—one who will teach him in full the meaning of obedience.