Harold the Hawk in the World Beyond the Tallest Tree

Harold the Hawk in the World Beyond the Tallest Tree is the fifth book in the Cousin Adventure Series, which finds the cousins leaving the safety of their grandparents’ ranch and entering a fantasy world by ascending a magical tree. In this book, Addie meets a most uncommon friend, Mr Opal, who guides her through Harodon until she must journey alone and ascend a mysterious mountain. Here, Addie must gain the strength and courage to encounter an enemy, which over the years has begun to spread evil throughout Herodon.