After a summer cooped up in his family's store selling bait, tackle, and soft drinks to tourists, fourteen-year-old Chase finally gets a chance to go on his first solo geocaching adventure. Using his GPS, he uncovers the geocache—a small metal box—hidden in a remote clearing in the mountains. Inside, Chase finds a troubling message scrawled in a child's handwriting. When Chase returns later, he finds another message this time asking for food. He is curious—and worried—about the mysterious individuals leaving the messages. What if they are hopelessly lost, or hiding from something—or someone? Before he can turn to the adults around him for help, Chase is pulled into a complex, dangerous drama and a chilling confrontation with an unstable father who will stop at nothing to hold on to his children. Young readers will learn all about the high-tech adventure game of geocaching in Katy Grant's exciting novel that features heart-pounding action and surprising plot twists.