At the crisis point of humanity's near future, the mystery cult called the Chantry Guild arose. It was their contention that the computerized world society would fall of its own weight-- that it would reduce earth's billions to a mass of faceless biped ants. They raised the call of destruction. They called upon the alternative laws of science-- the powers of nature men had once called witchcraft, the necromantic anti-science of the past brought forward to save the world by destroying it! Gordon Dickson's astonishing novel of the not-quite-human hero who turned the tide for the world-- and set the conditions for the cosmic migration that lead to the Dorsai-- is one of his most effectiver and most unusual.