A rather corpulent Johnny Mack Brown more than fills the title role of Frontier Agent. Once more, Brown plays a government man, sent to the badlands to round up an elusive outlaw gang. And once more, he is aided and abetted by Raymond Hatton, an old codger who has a lot more on the ball than people suspect. Director Lambert Hillyer keeps things moving even when nothing much is happening. Though it usually adheres to The Expected, Frontier Agent has a few offbeat touches, just to keep the non-western fans awake. ~ Hal Erickson, Rovi