Audiobook: Two On the Trail

A young family's story of pioneer life consisting of a teenage daughter (Nell) and her younger brother David, aka "Da", along with their dog (Robin), have unique adventures in the heart of the frontier wilderness, where they are thrust into mysterious and dangerous situations of survival amongst Canada's snows.
The Story starts off as the children have been left alone in a log cabin presuming that their widowed father will return in 4 days. Eight days have now gone by with no sign of him. What has happened to their father and can these children survive on their own in their quest to find him, unscathed by the hardships they must endure in the Canadian wilderness? - Summary by Laurie Banza