by Mary Pope Osborne (Author), Salvatore Murdocca (Illustrator)

JACK AND ANNIE continue their quest for the secrets of happiness--secrets they need to save Merlin. This time, the Magic Tree House takes them to the one continent they haven't visited before: Antarctica What can they hope to learn about happiness in such a barren place? Only the penguins know for sure . . . Jack and Annie are about to find out

"From the Hardcover edition."