The Badge of Marshal Brennan

After stumbling upon the titular lawman's body, fugitive Jeff Harlan (Jim Davis) assumes Brennan's identity and soon finds himself drawn into a life-and-death fight between corrupt rancher Col. Donaphin (Louis Jean Heydt) and the townsfolk facing an epidemic spread by his cattle. But when town doctor Steve Hale (Harry Lauter) stands up to Donaphin, will Brennan live up to the obligations that go with the badge he stole and come to Hale's aid?