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...

"In this amusing wordless picture book, a young toddler uses her stuffed bunny to perform a number of daring acts."--

"Fresh off their victory against Whiskerface, the superhero pets of Sunnyview Elementary face off against a fierce new foe: flying ninja squirrels!"--

"Wes promised Georgie he'd play the drums at her dance recital, but now he's too nervous. They pretend to be ninjas to help Wes find his courage, but when the audience is suddenly in danger, will they be able to save the day?"--

When bad guys interrupt their video game, father-and-son team Kai and Ray find their ninja skills put to the test as they level up to defeat the enemy.

Owlette is hosting a sleepover at her house, and Luna Girl wants to come. Owlette is worried that Luna Girl will ruin their sleepover--until they are forced to work together to save it.

Blaze and his friends use ninja skills to stop Crusher.

Told in rhyme, Moby Shinobi and his dog Toby volunteer to drive when his friend Jenny's junior race car driver fails to show up, but as usual his enthusiasm ends up in a mess of oil spills, flat tires, and wrong turns--but he redeems himself by repairing the oil leak, and wins the race for Jenny.

Although ninjas should be silent and use stealth, Wink finds his enthusiasm gets him into trouble with his teacher until he finds the perfect way to express both traits.

Ten-year-old Nathaniel adopts a ninja alter ego to help him adjust to a new disability.