Review by wes-connors

Yellowstone National Park ranger Henry Hunter (as Dick Sherwood)'s head is turned by pretty Chicago tourist Judith Barrett (as Ruth Foster). After the two get romantic, her ex-con father is murdered. Then, suspicious-looking visitor Alan Hale (as Hardigan) reveals he's a private detective; so, he investigates the death of Ms. Barrett's dad, Ralph Morgan (as James Foster). When Mr. Hunter becomes the prime suspect, his romance with the deceased's daughter understandably sours. Hunter insist he didn't kill Barrett's father, and begins his own investigation. Andy Devine (as "Pay-Day") and his mule Gertrude provide comic relief. Monroe Owsley leads an enjoyable supporting cast.