Eve of the Emperor Penguin

Jack and Annie of Frog Creek, Pennsylvania, know they have to find one of the four secrets of happiness to help save Merlin the magician. But when the magic tree house whisks them off to a misty island in the middle of nowhere, they wonder how they will find anything. As the fog lifts, they see a huge three-masted ship - could it be a pirate ship?

Jack and Annie head to 18th-century Austria, where they must find and help a musician by the name of Mozart. Decked out in the craziest outfits they've ever worn, including a wig for Jack and a giant hoopskirt for Annie, the two siblings search an entire palace to no avail.

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's missing eye...or is it really his heart that is missing?

Jack and Annie know they have to search for one of the four secrets of happiness to help Merlin the magician find joy in his life again. And so they head off in the magic tree house for Florence, Italy, in the early 1500s to spend the day with one of the greatest artists and inventors of all time: Leonardo da Vinci!

Merlin's beloved penguin, Penny, has been put under a spell! Jack and Annie must find four things to break the spell. The first is a rare and precious emerald. When the magic tree house whisks them back to India over 400 years ago to search for the jewel, they discover an amazing and exotic world filled with great danger. Will Jack and Annie find what they're looking for? Will they avoid the wrath of the all-powerful Great Mogul, survive a crazy ride on a wild elephant, escape an attack by king cobras - and make it back to the magic tree house alive?

Jack and Annie are off on another mythical mission at the request of Merlin the magician. Luckily they have a young sorcerer, Teddy, to help them. From underwater caves to a Spider Queen, from mystical "selkies" to a magical sword, this is a Magic Tree House adventure kids won't want to miss!

Jack and Annie are on their second mission to find and inspire artists to bring happiness to millions. After traveling to New Orleans, Jack and Annie come head to head with some real ghosts and discover the world of jazz when they meet a young Louis Armstrong.

Jack and Annie are on their third mission to find (and inspire!) creative people to bring happiness to others through the arts (Mozart and Louis Armstrong so far). Set in Ireland, in this story Jack and Annie meet an Irish girl and go on a magical adventure that changes the girl's life. She grows up to be Lady Gregory, who helped bring back the Irish legends, started a theater, and helped the Irish people regain both their heritage and their pride.

Jack and Annie travel back in time to a desert in the Middle East at the behest of Merlin, who has given them a rhyme to help on their mission. There they meet a Bedouin tribe and learn about the way that they live. From camel rides and oases to ancient writings and dangerous sandstorms, here's another Magic Tree House filled with all the mystery, history, magic, and old-fashioned adventure that kids love.

Beware of avalanches! When the magic tree house whisks Jack and Annie back in time to the highest pass in the Swiss Alps, they discover an ancient monastery filled with monks and Saint Bernard dogs. Annie can't resist offering to train a wild young dog named Barry. Will Barry lead Jack and Annie to the mysterious flower they need to save a friend's life? Or will he only lead them into danger?

A mysterious note from Merlin sends Jack and Annie to Paris, France, for the 1889 World's Fair. Their mission: find four "new magicians" and protect them from an evil sorcerer who plans to kidnap them and steal the secrets of their magic. When Jack and Annie arrive at the foot of the Eiffel Tower, they find exhibits from all over the world and thousands of people attending the fair!

Are you ready for a presidential adventure? Jack and Annie are! They are trying to get a special feather that will help save Merlin's baby penguin, Penny. When the magic tree house whisks them back to Washington, DC, in 1861, Jack can't wait to meet Abraham Lincoln himself! But the new president is too busy to see them, as he is desperately trying to save a nation in crisis.

Time-traveling brother-and-sister team Jack and Annie have to find a certain kind of food - the fourth thing needed to save Merlin's beloved penguin, Penny. The magic tree house whisks them off to a village in the mountains of Southeast China, close to a world-famous panda reserve. Will it be their easiest adventure yet? Not a chance! Jack and Annie don't know it, but they've arrived on the day of a historic earthquake! How will Jack and Annie survive when the giant quake strikes?

Magic Tree House 50 features Jack and Annie and legendary magician Harry Houdini! If kids get hooked on Magic Tree House, they're hooked on books! The Magic Tree House books, with their fiction and nonfiction aspects, are perfect for parents and teachers just starting to get into the "Core Curriculum". With a blend of magic, adventure, history, science, danger, and cuteness, the book topics range from kid-pleasers to curriculum perfect to seasonal shoe-ins.

Just in time for the 2014 FIFA World Cup, Magic Tree House Book 52, Soccer on Sunday will take Jack and Annie to a soccer field in Mexico where they must find the final secret of greatness for Merlin. On the field, they'll meet a young soccer player who dreams of one day playing in the World Cup just like his hero, the great Brazilian soccer player, Pelé!