Dan Winston & Lee Baum, the premier monster-exterminating duo of England, find themselves called to America. Billy Hoffster Johnson, a Texas cattle baron and former client of Dan's, arrives with news that a group of skinwalkers, long dead, are once again menacing his ranch and have murdered famed monster hunter and Dan's friend, Pecos Slim. The medicine man that revived these villains seems to be after more than their blood. When a strange black disk...