In their magic treehouse, Jack and Annie are again transported to King Arthur's realm, where invisible beings, giant ravens, and mistaken magic spells have a duke's castle in an uproar on Halloween night.

Merlin has sent Jack and Annie on a mission to the period known as the Renaissance. They must find a secret to happiness, but it wall take more than a research book and a magic wand to complete this task. Jack and Annie need help from one of the greatest minds of all time! What secrets will they learn from Leonardo da Vinci?

The magic tree house whisks Jack and Annie to Washington D.C. in the 1860s where they meet Abraham Lincoln and collect a feather that will help break a magic spell.

Jack and Annie travel to a monastery in the Swiss Alps where, with the help of St. Bernard dogs and magic, they seek the second of four special objects necessary to break the spell on the wizard Merlin's beloved penguin, Penny.

Magically transported to southwest China to find the final object needed to break the spell on the wizard Merlin's beloved penguin, Jack and Annie take a side trip to the world's largest giant panda reserve.

"Jack and Annie are magically transported to mid-1800's Thebes where they are saved from a dangerous accident by Florence Nightingale!"--

Bajo la luz de la luna, se alza un solitario castillo. No hay luces en las ventanas, ni risas en las salas. Que habra pasado con toda la gente que vive alli? Para descubrirlo, el mago Merlin llamara a Annie y a Jack. Pero... tendran ellos el coraje para correr las telaranas y atravesar las antiguqs puertas? Y ... podran descrifrar el hechizo que embrujo el castillo? Descubrelo en... In their magic treehouse, Jack and Annie are again transported...

"When a mysterious note invites them to Camelot, Jack and Annie travel in the magic tree house to the magical kingdom where they must find a lost dragon"--

Magic Tree House Merlin Missions are more challenging adventures for the experienced Magic Tree House fan. In each adventure Merlin the magician sends Jack and Annie on an adventure in the magic tree house.

When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.