"Beautifully photographed by Dan Clark on location at the Colorado Gorge, this film follows the Mix formula to a 't': fast action, elaborately mounted stunts and a neat welding of rugged and realistic action with a decidedly non-realistic story in which the menace is never very threatening and nobody ever gets hurt let alone killed. The story is already well under way in the very first scene and the pace never lets up, although it frequently changes to a stress on comedy. Even though this is from Fox's most profitable Mix period, they wisely refused to be sidetracked into pretension and bigger 'prestige' productions. It remains fast, economical and brief..." William K. Everson