Details: Five more adventure-filled books with page-turning action, mystery, and thrill that kids can't put down! Follow Isaiah, Sadie, and Ethan as they embark on their journey through some of the country's most beautiful National Parks, where they will encounter thrilling action, heart-pounding adventure, and captivating mystery at every turn. THIS SET INCLUDES (BOOKS 6 - 10): Book 6: Yellowstone Sabotage Book 7: Yosemite Fortune Book 8: Acadia Discovery Book 9: Glacier Vanishing Book 10: Arches Legend
