When thirteen-year-olds Jonah and Chip, who are both adopted, learn they were discovered on a plane that appeared out of nowhere, full of babies with no adults on board, they realize that they have uncovered a mystery involving time travel and two opposing forces, each trying to repair the fabric of time.

Artemis's mother has contracted a deadly disease -- and the only cure lies in the brain fluid of African lemurs. Unfortunately, Artemis himself was responsible for making the lemurs extinct five years ago. Now he must enlist the aid of his fairy friends to travel back in time and save them. Not only that, but he must face his deadliest foe yet... his younger self.

When Joplin finds an antique platter with a beautiful Dutch scene, she idly wishes for the girl painted on the platter to be her friend and the next day Joplin finds the girl in the garden, longing to go back to her seventeenth-century home.

A breach between the normal world and the Archipelago of Dreams in 1931, sends John and Jack, two of the Caretakers of the Imaginarium Geographica, on a race through history, using a time travel device left by Jules Verne, to discover the identity of the Cartographer, the only thing that can restore both worlds.

When we last saw our heroes, George and Harold, they had been turned into evil zombie nerds doomed to roam a devastated, post-apocalyptic planet for all eternity. But why, you might ask, didn't the amazing Captain Underpants save the boys from this frightening fate? Because Tippy Tinkletrousers and his time-travelling hijinks prevented George and Harold from creating Captain Underpants in the first place! Now, having changed the course of human history...

"George and Harold are behind bars for a crime they didn't commit! But just as they are settling into their new life, they are pulled from prison by a time-traveling tyrant named Tippy Tinkletrousers! Now the boys are taking a trip back in time to the carefree days of kindergarten, when the scariest thing they had to face was not evil mad scientists or alien cafeteria ladies but a sixth-grade bully named Kipper Krupp, the nephew of their clueless...

Princess Emma has wonderful new powers as the Green Witch. With these powers, and the help of some friends, Emma tries to find the fairy who put a curse on the female descendents of her family.

"Regan Fitz and Elliot Mason have been enemies since they started training to become Glitchers--people who travel through time to preserve important historical events. But everything changes when they find a letter from Regan's future self, warning them about an impending disaster that threatens them and everyone they know. Will they be able to set aside their past in order to save the future?"--Publisher marketing.

After Ashley and Kristi find an antique doll buried in old Miss Cooper's garden, they discover that they can enter a ghostly turn-of-the-nineteenth-century world by going through a hole in the hedge.

An abridged version of the science fiction novel about the scientist who invents a time machine and uses it to travel to the year 802,701 A.D., where he discovers the childlike Eloi and the hideous underground Morlocks.