A harrowing tale of human intelligence pitted against the forces of nature.

With prospectors, trappers, and whalers pouring into northwestern Canada, the North West Mounted Police were dispatched to the newest frontier to maintain patrols, protect indigenous peoples, and enforce laws in the North. In carrying out their duties, these intrepid men endured rigorous and dangerous conditions.

On December 21, 1910, a four-man patrol left Fort McPherson, Northwest Territories, heading for Dawson City, Yukon, a distance of 670 kilometres. They never arrived. The harrowing drama...