The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system Getting the facts behind the fiction has never looked better. Track the facts with Jack and Annie When Jack and Annie came back from their adventure in Magic Tree House #5: Night of the Ninjas, they had lots of questions. What did it mean to be a ninja or a samurai? Did they really have special abilities? What was life like...