In the first half of the 19th century, Mary Marshall Dyer (1780-1867) was at the center of an aggressive anti-Shaker movement - an informal yet effective group joined by their despisal of Shakerism and their determination to thwart the new faith. With her husband and their five children, Dyer had been a Shaker for two years, but as her husband grew increasingly attracted to Shakerism, Dyer's own commitment waned, and when she announced she was leaving...