The Last Alaskans - Season 1 Episode 6 -

The first day of darkness has arrived at the refuge. Now, the days are growing shorter, causing Bob, Heimo and the Lewis family to set additional traps and continue hunting for food. Heimo uses what little daylight there is to catch his biggest adversary and competition for resources - the wolf. But overflow on the river blocks his path home and jeopardizes his golden rule of surviving the winter: "Always return home before the faint light of day is gone." Bob returns to the refuge from town and begins to follow fresh animal tracks as a result of the constant snowfall...