As Christina and her friend Taft investigate the substance called "zoom," they discover several things: 1. Zoom can be used as fuel. 2. Orphans are being enslaved to extract zoom from mines. 3. Christina's long-lost mother may have been killed because of her work with zoom.
Summary Ten-year-old Christina lives a sheltered life until she discovers a secret tunnel, an evil plot to enslave orphans, and a mysterious source of energy known as zoom.
This collection delivers spine-tingling tales packed with mystery and action, featuring both fiction and nonfiction selections. With 14 books per year, young thrill-seekers will stay engaged as they uncover clues, solve puzzles, and embark on daring journeys.