space and time

In the mid-1950s, Yggdrasil Birnbaum and her friends, Seamus and Neddie, journey to Old New Hackensack, which is on another plane, to try to learn why ghosts are disappearing from the Birnbaum's hotel and other Hollywood, California, locations.

Fifteen-year-old musician J.J. Liddy leaves his small, Irish town and travels to the land of the fairies to search for time so he can give it to his busy mother, but when he gets there, he discovers that the inhabitants are in trouble and learns about his family's secret history.

Fifteen-year-old Jack is sent to 1914 Europe as a pawn in the battle between his long-lost father, who has built a time machine, and a secret network of scientists who want to prevent him from trying to use it to change history for the better. Includes historical notes.

When an army of fairy space probes programmed to destroy Atlantis return to Earth, Artemis Fowl attempts to stop the destruction of the city while dealing with his delusional and obsessive-compulsive disorders.

"During what seems like an ordinary museum visit, a tour guide lures Sunni and Blaise through a painted doorway and they discover they've stepped into eighteenth-century London. When they realize their "tour guide" will do anything to get more information about what Sunni and Blaise know about magical paintings, they attempt to flee and encounter body snatchers, art thieves and forgers"--Provided by publisher.

Field Operative Rico Garron embarks on a routine expedition in 5000 B.C. only to find himself embroiled in the world's first murder investigation.

Seventeen-year-old Emerson uses her power to manipulate time to help Michael, a consultant hired by her brother, to prevent a murder that happened six months ago while simultaneously navigating their undeniable attraction to one another.

Fourteeen-year-old Sunni, her stepbrother Dean, and an art-student friend trace the footsteps of a labyrinth built in Blackhope Tower by a mysterious and brilliant sixteenth-century artist, and suddenly find themselves trapped inside his enchanted painting, trying desperately to get out.

Twelve-year-old Henry York and his cousin Henrietta discover 100 hidden portals to other worlds in the bedroom wall of his aunt and uncle's house.

Twelve-year-old Henry York, finally reunited with his family, works with them and the Chestnut King, the long-deposed and mythic leader of the faeren people, to destroy Nimiane and her forces of evil.