Jack and Annie are ready for their next fantasy adventure in the bestselling middle-grade series-the Magic Tree House! It's icicle city . . . when the Magic Tree House whisks Jack and Annie to the frozen Arctic. Luckily, a seal hunter on a dogsled lends them warm clothes. Unluckily, they get stuck on cracking ice. Will the giant polar bear save them? Or will Jack and Annie become frozen dinners? Visit the Magic Tree House website! MagicTreeHouse.com From the Trade Paperback edition.