There were not that many actors who could cross the genres as effortlessly as James Stewart, and he proves that here in this superior western that pitches him as disgruntled bounty hunter “Kemp”. He is on the trail of the ingenious “Vandergroat” (Robert Ryan) who’s found himself a vantage point that he can readily defend with rifle and rocks. “Kemp” is a lone wolf, so isn’t naturally inclined to work with the…