The rare letters Tell Sackett received always had trouble inside. And the terse note from his cousin Logan was no exception. Logan faced starvation or a hanging if Tell couldn't drive a herd of cattle from Kansas to British Columbia before winter. To get to Logan, he must brave prairie fires, buffalo stampedes, and Sioux war parties. But worse trouble waits, for a mysterious enemy shadows Sackett's every move across the Dakotas and the Canadian Rockies. Tell Sackett has never abandoned another Sackett in need. He will bring aid to Logan, or die trying.