The third title in a new quartet of enchanting picture books in which a boy and his beloved grandad discover the wonder of the natural world.

The third title in this enchanting follow-up quartet to Sam Usher's acclaimed seasonal books, featuring Boy and Grandad who now encounter a variety of animals - and learn valuable lessons about the natural world.

LOST sees the two of them setting off to search for a lost dog. Their snowy adventure takes them all the way to the Arctic, where they find the dog with her new friends - a pack of huskies!