The King of the Cowboys In A Whizz-Bang Western! John Wayne stars as an undercover man trying to catch up with some counterfeiters. Joining a traveling medicine show to find the culprits, he uncovers a history of frame-ups and double-crosses. Gino Corrado, Yakima Canutt, and Earl Hodgins also star in this wild tale from Paul Malvern Productions. This was Wayne's final Monogram Pictures/Lone Star Production Western, but he gave Hollywood's Poverty Row plenty to remember him by!