National Park Mystery Series: Adventure in Grand Canyon National Park, Book 3 by: Aaron Johnson

Join Jake, Amber, and Wes on a heart-racing quest through the rugged wilderness of Grand Canyon National Park. When Jake inherits a mysterious scrapbook from his grandfather—full of hidden codes, maps, and riddles—the trio soon realizes that this isn’t just an ordinary scavenger hunt. From dizzying heights to cavernous depths, they face real danger, test their friendship, and attempt to unlock a centuries-old mystery.