Mary Pope Osborne

Jack and Annie experience a series of time-travel adventures.

Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.

Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.

Annie and Jack present information about Leonardo da Vinci, discussing the world in which he lived as well as his work as an artist and scientist.

While on a mission to prove to Merlin that they can use magic wisely, Jack and Annie travel to seventeenth-century Venice, Italy, to save the city from disaster.

Giants and Cannibals! Wonders and Witches! One Amazing Hero. Brave Odysseus is far from home, tossed by stormy seas, and cursed by an angry one-eyed giant. If he ever wants to see his family again, he will have to face hungry cannibals, outwit a beautiful witch, and sail past a six-headed serpent. His journey is the ultimate test of endurance and courage. In this exciting series, best-selling author Mary Pope Osborne retells Homer's Odyssey , one...

Jack and Annie travel back to Victorian London when Merlin asks them to use their magic to inspire Charles Dickens to write "A Christmas Carol.".

The magic tree house transports Jack and Annie on a mission to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths.