The Rucksack Kids

The small lakeside town of Wolfhollow, New Hampshire is bustling with Fourth of July tourists. The week-long holiday festivities are interrupted when a valuable letter from the Revolutionary War is stolen from the town museum. Fourteen-year-old Leah Bartlett and her two siblings, eleven-year-old Avery and nine-year-old Grayson, jump in to solve this summer mystery. The local newspaper nicknamed the Bartlett children the Rucksack Kids for the canvas backpacks they each carry.

As summer begins to wane, the Bartletts leave the lakeside community of Wolfhollow, New Hampshire to take a last minute vacation to the seashore. A half mile from the beach sits Mystery Island. This fog-enshrouded island happens to be the destination on a pirate treasure map the kids recently discovered. However, to find the buried treasure, fourteen-year-old Leah Bartlett and her two siblings, twelve-year-old Avery and nine-year-old Grayson, must decipher a secret code. .