Another Edge-Of-Your-Seat Adventure in the Bestselling Series. Jake Evans and his two friends, Wes and Amber, are on a quest in Yosemite National Park to solve a new set of clues that lead them to the heights and down into the depths of Yosemite National Park. Ages 7 to 14 - With over 60 Illustrations - A Page-Turner Full of Twists and Turns The National Park Mystery Series Before Jake's grandfather died, he was on the trail of a centuries-old mystery. He has entrusted that mystery to Jake, leaving behind a set of hidden codes, riddles, maps, and other clues that lead Jake and his friends on a scavenger hunt while camping in the most rugged wilderness of the national parks. The mystery unfolds as Jake, Amber, and Wes learn about survival skills, natural history, integrity, character, and friendship. Along the way, they discover they are not the only ones on this quest. An elusive shadow group is close on their heels. Illustrated by the author, these page-turning adventures are designed to capture the imagination of even the most reluctant of young readers. Parents looking for a delightful read-aloud adventure will find it hard to put down. Can I start the series with Book 5, or do I have to start with Book 1? You can with any book in the series, but it's most enjoyed by starting with Book 1 and reading them in order. All books have a brief preface to catch the reader up on the story without spoiling the plot.