The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system!

It's a treasure trove of trouble! Jack and Annie are in for a high-seas adventure when the Magic Tree House whisks them back to the days of deserted islands, secret maps-and ruthless pirates! Will they discover a buried treasure? Or will they be forced to walk the plank?

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