The magic tree house takes Jack and Annie back in time to feudal Japan where the siblings learn about the ways of the Ninja.

Jack and Annie continue their quest for the secrets of happiness--secrets they need if they're going to save Merlin. But when the magic tree house leads them to a tiny deserted island in the middle of the ocean, they're not sure who needs help more--Merlin or themselves! The brother and sister team are soon rescued by a ship of explorers and scientists. But the crew isn't looking for the secrets of happiness. The crew is looking for . . . a sea monster!From...

"George and Harold have been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic planet for all eternity! Unfortunately, the boys can't count on Captain Underpants for help because Tippy Tinkletrousers and his time-traveling hijinks prevented George and Harold from creating him in the first place! With Tippy having changed the course of human history forever, George and Harold will have to figure out a way to change it back!"--Back...

In this breathtaking novelrich in history and adventureThe New York Times bestselling author Diana Gabaldon continues the story of Claire Randall and Jamie Fraser that began with the now-classic novel Outlander and continued in Dragonfly in Amber and Voyager. Once again spanning continents and centuries, Diana Gabaldon has created a work of sheer passion and brilliance... It began at an ancient Scottish stone circle. There, a doorway, open to a select...

Armed with a research book and magic rhymes, Jack and Annie travel back 1,200 years to ancient Baghdad and help the city's ruler spread wisdom throughout the world.

Time travelers Jonah and Katherine arrive in 1611 to rescue missing child John Hudson, son of the explorer Henry Hudson, but just as the mutiny on the Discovery is supposed to start, Jonah and Katherine's knowledge of history is tested once again, and they fear that more is at stake than just one boy's life. Author's note includes facts about Henry Hudson's explorations.

The Time Warp Trio find themselves in the Wild West of yesteryear, rubbing elbows with cowboys and Indians.

Robbed of the powerful object she needed to save her mother, time traveler Etta Spencer is stranded far from home and the privateer she loves before resolving to destroy the astrolabe, a mission that is challenged by a shattering revelation.

The magic tree house takes Jack and Annie to an African rainforest, where the siblings encounter gorillas and learn to communicate with them.

A wordless tale in which a bird flying around the dinosaur exhibit in a natural history museum has an unsettling experience when the dinosaurs seem to come alive and view the bird as a potential meal.