Jack and Annie are whisked off to the vast plains of Africa, where they must solve Morgan le Fay's third magical riddle. But that's only the beginning! Once the riddle is solved, they still have to get past a pride of lions, a humongous herd of rampaging wildebeests, and one very hungry Masai warrior.

Mary Pope Osborne is the author of all the Magic Tree House books, as well as American Tall Tales and New York’s Bravest for Knopf. The author lives in Goshen, CT.Sal Murdocca has been illustrating and writing books for children for many years. He has illustrated every book in the Magic Tree House fiction series and the Magic Tree House Research Guide nonfiction companions. Sal and his wife Nancy are avid runners and have toured Europe on bicycles. He lives in Rockland County, NY.