Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle. Morgan le Fay will make Jack and Annie masters of the tree house if only they can solve four riddles -- which will take four books, of course! Dolphins at Daybreak begins the third set of four books in this magical (and increasingly popular) series! Jack and Annie are off in the Magic...

Jack and Annie are transported by their magic tree house to the time of the Civil War where they meet Clara Barton.

The magic tree house takes Jack and his sister Annie to the Great Plains where they learn about the life of the Lakota Indians.

The magic tree house takes Jack and Annie to San Francisco in 1906, in time for them to experience one of the biggest earthquakes the United States had ever known.

Jack and Annie travel in their magic tree house to the land of the mystical selkies to seek a magical sword for Merlin.

Eight-year-old Jack and his younger sister Annie use the magic treehouse to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight.

Having used their magic tree house to travel to India, where they must get a gift to help free the dog Teddy from a spell, Jack and Annie have adventures involving a tiger and other endangered jungle animals.

"Where did the tree house come from? Before Jack and Annie can find out, the mysterious tree house whisks them to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark ... or will they become a dinosaur's dinner?" --

"Flashlight Night is an ode to the power of imagination and the wonder of books. Three children use a flashlight to light a path around their backyard at night; in the flashlight's beam another world looms. Our heroes encounter spooky woods, a fearsome tiger, a time-forgotten tomb, an Egyptian god, a sword-fighting pirate, and a giant squid. With ingenuity, they vanquish all, then return to their tree house--braver, closer, and wiser than before--to...

Abby and Stacy build a tree house and decide not to share it with the other Cul-de-sac Kids, even if they have to form a new all-girls club to get their way.