That clock can't be right. When Elise wakes up the morning after her birthday celebration, she's surprised to find herself in her bedroom. Last she can remember, she had fallen asleep next to her best friends at her slumber party in her basement, and it was October. But now she's alone, and her phone says it's April 8. Elise doesn't understand. How could she have woken up six months later? No one else is acting like anything strange has happened,...

Faced with a dull summer in the city, Jane, Mark, Katharine, and Martha suddenly find themselves involved in a series of extraordinary adventures after Jane discovers an ordinary-looking coin that seems to grant wishes.

After mastering the ability to walk between dimensions, sixteen-year-old Joey Harker and his fellow InterWorld freedom fighters embark on a mission to maintain peace between the rival powers of magic and science who seek to control all worlds.

It has been two years since Joseph Harker first Walked between dimensions, met the alternate forms of himself, and formed a team to protect the Altiverse in the struggle between the vicious forces of magic and science--and now, injured, he has returned to his own dimension, bringing danger with him.

Fourteen-year-old Jason Walker is transported to a strange world called Lyrian, where he joins Rachel, who was also drawn there from our world, and a few rebels, to piece together the Word that can destroy the malicious wizard emperor, Surroth.

As her mother prepares to be a contestant on the 1970s television game show, "The $20,000 Pyramid," a twelve-year-old New York City girl tries to make sense of a series of mysterious notes received from an anonymous source that seems to defy the laws of time and space.

When twelve-year-old Becker Drane is recruited by The Seems, a parallel universe that runs everything in The World, he must fix a disastrous glitch in the Department of Sleep that threatens everyone's ability to ever fall asleep again.

After Jason succeeds in finding a way back to Lyrian, he's immediately in more danger than ever. Meanwhile, Rachel and the others have made their own progress--as well as discovered new enemies. As the group ultimately rejoins, they strive to convince their most needed ally to join the war and form a rebellion strong enough to triumph against the emperor.

Time-travelers Jonah and Katherine are summoned to help another missing child from history, this time Virginia Dare from the Roanoke Colony, but their journey is sabotaged and goes dangerously awry, leaving them in the wrong time period. Includes author's note about the history of Roanoke Colony and Virginia Dare.

Having upset the balance between the warring statues of London, twelve-year-old George is confronted with new challenges as he tries to free his captured friends Edie and The Gunner from the formidable Walker and deal with the three strange veins of marble, bronze, and stone that have begun to grow out of his hand.