Earl Dwire essayed many a nasty Boss Villain in his long B-Western career, but this time he is even more vile. With an ill-fitting wig and an even worse Mexican accent, Dwire positively leers at the sight of Sheila Terry and right in front of the girl's grandfather to boot. The latter is played by that ornery old polecat George Hayes, years before he added "Gabby" to his moniker, and he easily steals every scene he is in. Yakima Canutt, meanwhile, performs several daring stunts, some while wearing a wig to look like Terry, and a very young John Wayne hems and haws as only he could. Neither the best nor the worst of the Monogram Lone Star Westerns, The Lawless Frontier is interesting mainly as an example of Wayne in his embryonic years.