Young Meg Murry, her brother Charles, and their friend Calvin, embark on a journey through space and time, assisted by three eccentric women, when they set out to find Meg's father, a physicist who disappeared while experimenting with time travel.

Connecticut middle-schooler Jake and his older sister Kady are transported by a Mayan artifact to a strange world inhabited by a mix of people from long-lost civilizations who are threatened by prehistoric creatures and an evil alchemist, the Skull King.

In an alternate 1875 England, seventeen-year-old clock mechanic Danny, aided by the boy he loves, must discover who is sabotaging the towers that control the flow of time and stop him or her before it is too late.

Londons fall and kingdoms rise while darkness sweeps the Maresh Empire, and the fraught balance of magic blossoms into dangerous territory while heroes struggle.

After his parents are kidnapped, timid twelve-year-old Henry York leaves his sheltered Boston life and moves to small-town Kansas, where he and his cousin Henrietta discover and explore hidden doors in his attic room that seem to open onto other worlds.

Four cousins, Roger, Ann, Eliza, and Jack, have an extraordinary summer when, after an old toy soldier comes to life, they find themselves transported back to the days of Robin Hood and Ivanhoe.

As Omri, his father, and other members of his family learn more about the cupboard in his room, together and separately they are caught up in several dangerous adventures that reveal more about its powers.

When someone uses futuristic technology to play pranks on twelve-year-old Dorso Clayman, he and his best friend set off on a supposedly impossible journey through space and time trying to stop the gamesters who are endangering the universe.

Mistress Jane has tapped into the universe's darkest secret to create the Blade of Shattered Hope, and in her quest to attain a utopian reality for the future of mankind she is ready to risk billions of lives to set her plan in motion.

When Jonah and Katherine travel to early 1900s Switzerland and Serbia to return Albert Einstein's daughter, Lieserl, to history, her mother Mileva grasps entirely too much about time travel and has no intention of letting her daughter go.