Disaster! The Unsinkable is sinking.

Grandfather and Roo - a dog of character and strong views - are on a fishing trip to catch the King Cod.  But they end up marooned on a desert island.  How will they survive - and whose footprint do they find on the beach?

Grandfather’s letters tell the story of their extraordinary and funny adventure.

By the winner of the Gold Medal, Smarties Book Prize