Incest is a chilling tale of sexual experimentation and philosophical exploration carried to its most logicalÂ—and devastatingÂ—extreme. Marquis de Sadeâ€™s semi-autobiographical protagonist, Monsieur de Franval, is rich, handsome, intelligent, and thoroughly immoral. When he marries a pious woman and fathers a daughter, he is determined to educate his progeny to be Â“free.â€ť The ultimate proof of his daughterâ€™s unfettered liberty? That she become his secret lover. But when the beautiful and accomplishedÂ daughter spurns an eligible young bachelor, instead declaring her intention to remain with her father, her naĂŻve and doting motherâ€™s suspicions are at last aroused. Confused and distressed by her daughterâ€™s behavior, Madame de Franval confronts her husbandÂ—with tragic results. A challenging and breathtaking masterpiece, Incest is a sober portrait of catastrophe in the midst of excess.