THE SIMPLER rounds out the first trilogy in The Riven Country Series. The contemporary, psychological novel examines obsession and madness, whether in Paris, France, a demesne in Ireland, or Devils Tower in Wyoming's Black Hills. Senga Munro, ever the herbal simpler, using one herb at a time, continues to provide her remedies and esoteric philosophies. In return, her trust will be tried-and who is Danica Olsen, other than a former acquaintance of...