Synopsis: After years on the East Coast, former boxer Jack Mahoney returns to New Mexico and finds himself framed for murder. Though the only evidence is circumstantial, in the face of vicious prosecutor Kiefer, Mahoney's girlfriend -- defense lawyer Gail Kingston -- fails to convince the jury of his innocence. Determined to clear Mahoney's name, postal worker Steve Reynolds transforms himself into the masked rider known as the Durango Kid.