Tears of the buffalo

"The days of slaughtering buffalo were supposedly over, mainly because there were so pitifully few of them remaining. But with top dollar on offer for their severed heads as trophies, some hunters just can't resist. In Yellowstone Park, where such poaching is illegal, Captain Moses Harris and his company of US Cavalry are assigned the job of stopping them. Yet in the depths of winter, following an apparently motiveless murder on the army post in...