Your Grandparents Are Spies by Anson Montgomery takes YOU on another unexpected adventure with your grandparents. Your 6-8 year old reader will visit the zip-line park and cruise through the canopy, chase after a runaway thief, and fly in a rocket ship into space! Your Grandparents Are Spies is a companion book to the bestselling title Your Grandparents are Zombies!. Choose Your Own Adventure Your Grandparents Are Spies is an interactive adventure...