Magic tree house the knight at dawn by Mary Pope Osborne 9781338224122 scholastic Audience Children (Ages 6-9) / Chapter Book, Adventure, Time Travel, Historical Fiction. Series / Edition Information Magic Tree House Book . Paperback Edition (ISBN 9781338224122). By Mary Pope Osborne, part of the bestselling time-travel adventure series. Genre Children's Fiction, Chapter Book, Historical Fiction, Adventure, Medieval. Plot Synopsis Jack and Annie find their way back to the magic tree house, and this time they land in the heart of the Middle Ages. They discover an enormous, gloomy castle, where they must sneak past knights, dodge a hungry dungeon keeper, and try to unravel the mystery of the magic tree house itself. Pet friendly home. Bundle and save so check out my other listings and follow me. Condition as shown! #Magic Tree House #The Knight at Dawn #Mary Pope Osborne #Chapter Book #Medieval