Tracker's canyon

"Thanks to his dad's coaching, sixteen-year-old Tristan is one of the best climbers and trackers in his community. He can read footprints and bushes like they're security-camera footage, and fearlessly descend rock faces and waterfalls. So when his father disappears, leaving his mother too grief-stricken to function, the young canyoneer's life goes into freefall. Left in the hands of a well-meaning but incompetent uncle and a space-cadet housekee...