As a boy growing up in rural Arkansas, Bob Brewer often heard from his uncle and his great-uncle about a particular tree in the woods, the "Bible Tree," filled with strange carvings. Years later he would learn that this tree was carved with symbols associated with the Knights of the Golden Circle, a Civil War­era secret society that had buried gold coins and other treasure in various remote locations across the South and Southwest in hopes of someday funding a second War Between the States. These secret caches were guarded by sentinels, men whose responsibility it was to watch and protect these sites. To his astonishment, Bob discovered that both his uncle and his great-uncle had been twentieth-century sentinels, and that he had grown up near an important KGC treasure site. In Shadow of the Sentinel, Bob Brewer and investigative journalist Warren Getler tell the fascinating story of the Knights of the Golden Circle and the hidden caches the KGC established across the country. Brewer...