Johnny Congo

"Blaine and Tracey had thought they were in for the worst summer of their lives when they arrived at Uncle Cecils house. They soon discovered that their eccentric uncle and his inventor assistant had other plans in store. The unconventional duo had created invisible zip lines for the twins to use as they traveled around the globe to learn all about science. In the first leg of their journey, The Sassafras Science Adventures Volume 1: Zoology, they...