Publisher Marketing: "In this fourth chapter book from the best-selling Rainbow Magic series, friends Kirsty and Rachel must rescue Fern the Green Fairy! An old stone tower on Rainspell Island seems to be filled with magic, but best friends Kirsty and Rachel can't get inside to search for Fern the Green Fairy, who has been sent away from Fairyland by the scheming Jack Frost. Can the girls and their new animal friends help reunite Fern with her fairy sisters? With age-appropriate text, a magical story, and illustrations throughout, this chapter book is perfect for kids who are starting to read independently."