Eleven-year-old Miri Gill feels left out in her family, which has two sets of twins and her, until she travels back in time to 1935 and discovers Molly, her own lost twin, and brings her back to the present day.

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

The magic treehouse takes Jack and Annie to a moon base in the future where they continue to search for the fourth thing they need to free their friend Morgan from the magician's spell.

"Musical prodigy Rosie stops playing the violin, upsetting her ambitious mother but making room in her life for new experiences, including a glitch in space-time that lets her meet her mom as a twelve-year-old"--

After a liver transplant, Andre suddenly becomes a time traveler, but is his soulmate Michael, who lives in 1969, or Blake, his donor's brother, who is training him in 2021?

While working on a time machine for the Spring Science Fair, Ordinary Boy discovers the true identity of long-lost Superopolis hero Meteor Boy.

When Miss Information kidnaps the president's daughter, it is up to twelve-year old Ruby, also known as Pufferfish, to use her super-nanobyte-enhanded allerigies in leading the NERDS' investigation.

"In The Secret Explorers and the Tomb Robbers, Gustavo (history expert) and Kiki (engineering expert) are sent the mission of stopping the Cairo Museum from closing down. They travel back in time to Ancient Egypt and are soon drawn into a tense, thrilling adventure that involves breaking into pyramids, learning ancient Egyptian hieroglyphics, and stopping thieves hoping to rob all the treasure from the Pharaoh's tomb"--|cProvided by publisher.

As a thank-you from Merlin and Morgan, Jack and Annie are sent on what should be a vacation at a luxurious resort in Cozumel, Mexico, but is, by mistake, an adventure with ancient Mayans, instead.

"A boy with extraordinary powers. An army of deadly monsters. An epic battle for the future of peculiardom. The adventure that began with Miss Peregrine's Home for Peculiar Children and continued in Hollow City comes to a thrilling conclusion with Library of Souls. As the story opens, sixteen-year-old Jacob discovers a powerful new ability, and soon he's diving through history to rescue his peculiar companions from a heavily guarded fortress. Accompanying...