The tree house is back--but where is the enchantress Morgan le Fay? The search for her begins as Jack and Annie are transported back to ancient Japan, where they find themselves in the cave of a ninja master. Will the evil samurai warriors get to Jack and Annie before they can learn the secrets of the ninjas?
The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system

Have you ever met a real live ninja? Jack and Annie do when the Magic Tree House whisks them back to ancient Japan, where they find themselves in the cave of a ninja master. Will they learn the secrets of the ninja? Or will the evil samurai warriors get them first?

Did you know that there's a Magic Tree House book for every kid?

Magic Tree House: Adventures with Jack and Annie, perfect for readers who are just beginning chapter books
Merlin Missions: More challenging adventures for the experienced reader
Super Edition: A longer and more dangerous adventure
Fact Trackers: Nonfiction companions to your favorite Magic Tree House adventures

Have more fun with Jack and Annie at MagicTreeHouse.com