Hudson is a ship's captain way up north, and Henderson (and whatever happened to her?) is his wife. They're stuck in a hidden harbor in Canada due to villain Cochran's efforts. He wants Henderson and is not going to let Hudson stand in his way. A fight takes place, and Hudson's leg is
shattered. Hudson, Henderson, and a sleazy guide take off on a four-day jaunt across the permafrost with Cochran's Great Dane leading the dogs pulling the sled. Cochran comes after them and is finally set upon by his dog. The animal suffered some heavy-handed assaults from Cochran earlier and
gives the bad guy his comeuppance. O'Brian is one of Cochran's aides. Some good outdoor photo...