The Secrets Tree

While Halloween celebrations are in full swing at the stately home, Polly and Rex are in search of a new ghost dog. Down in the old stable block they come across a dog’s head carved in a door and wake a terrier called Patch, only for the little dog to run off. When Polly and Rex find him hiding in a hollow tree they find themselves on the trail of an even greater mystery. Inside the tree is a coded message. Can Polly and Rex unravel the mystery of the dog’s young master and his brother?