Seventeen-year-old Charlotte Barclay is still haunted by an encounter she had eight years ago--a run-in with a fairy beast that had eyes like witchlight and a taste for flesh. Charlotte has avoided the Greenwood ever since, but everything changes when her mom goes missing, kidnapped by the fairies that haunt the forest behind Charlotte's home. Charlotte dives into a world as magical as it is deadly, coming face-to-face with fairy creatures that never get mentioned in the story books--including the creature that haunts her dreams. She must embrace her task and conquer her fears, or else she'll never see her mom again.