Book 37 in the Magic Tree House series (2007) A novel by Mary Pope Osborne Merlin the Magician will not eat or sleep or speak to anyone in Camelot. What can be done? The enchantress Morgan knows who to ask for help: young Jack and Annie of Frog Creek, Pennsylvania! The brother-and-sister team quickly head off in the magic tree house on another magical and historical adventure. Their mission: discover one of the four secrets of happiness.
Book 33 in the Magic Tree House series (2005) A novel by Mary Pope Osborne Merlin has asked Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy, in the 1700s. With the help of some new friends, a research book, and a mysterious rhyme from Merlin, the heroes will save the beautiful city from a flood! Yet another Magic Tree House book that will engage kids with history, magic, and nonstop action from beginning to end.
Book 32 in the Magic Tree House series (2004) A novel by Mary Pope Osborne JACK AND ANNIE, joined by Teddy and Kathleen (from earlier books), travel in the Magic Tree House to a land of snow where the Ice Wizard has captured Morgan and Merlin. The four friends must find the Ice Wizard is missing eye . . . or is it really his heart that is missing?
Book 29 in the Magic Tree House series (2001) A cup, a compass, a key: the magic tree house has brought siblings Annie and Jack to Camelot, where they embark on a mysterious mission to find these enigmatic gifts. In this special hardcover addition to the bestselling Magic Tree House series, the young adventurers must travel to the Otherworld, an "ancient, enchanted land beyond the edge of the Earth, the place where all magic began" to save Camelot from dark wizard Mordred's evil spell.
Book 28 in the Magic Tree House series (2003) When the Magic Tree House whisks Jack and Annie off to Hawaii it's for more than a vacation-they're in search of a fourth kind of magic for Morgan! On the way they help an island community survive a tidal wave and, of course, take some time out to surf! Ultimately, they discover that the magic that they have found in this set of four books are everyday magics: the magic of the arts, the magic of the natural world, the magic of community; and the magic of fun.