The Magic Tree House transportss Jack and Annie to the freezing Arctic. There, they must solve the final riddle to 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. Will they be able to solve the riddle before they get iced themselves?
"I'm one of those very lucky people who absolutely loves what they do for a living. There is no career better suited to my eccentricities, strengths, and passions than that of a children's book author."--Mary Pope Osborne
Mary Pope Osborne is the author of the popular Magic Tree House series. She works with her husband Will and her sister Natalie on the nonfiction companion series, Magic Tree House Research Guides. Many of her books have been named to best-books lists.





