Description Jack and Annie go to the freezing Arctic to solve Morgan le Fay's final riddle and become master librarians. But it's not going to be easy--especially when they have cracking ice, a seal hunter, and a prodigious polar bear to deal with!
Reviews Customer Booksource Ms. Keith, Polar Bears Past Bedtime Star Star Star Star Star 5/23/2012 5:55:51 PMTheir magic tree house takes Jack and Annie to the Arctic, where a polar bear leads them onto very thin ice.