Human sacrifice, communities eaten from within, a vast mind blazing under the mud of Lake Titicaca; the rise and fall of empires cruel and kind. In the Andes of a thousand years ago, the Huari empire is sick. Its communities are being eaten from within by a plague, a contagion that is not of the body but of something far deeper, a plague that has taken their collective spirit. Rooting out this parasite is a task that is laid upon...