Aidan's new friend Antoinette is called to the Realm, but when she arrives to rescue Robby through his Glimpse-twin, the place is in turmoil and she must decide whether to stay loyal to the one true king or join the evil side.

When Polly O'Keefe visits her grandparents in Connecticut, she has an encounter with some people who existed over 3,000 years ago.

Publisher Annotation: A ship. A garden. A library. A key. In Kaleidoscope, the incomparable Brian Selznick presents the story of two people bound to each other through time and space, memory and dreams. At the center of their relationship is a mystery about the nature of grief and love which will look different to each reader. Kaleidoscope is a feat of storytelling that illuminates how even the wildest tales can help us in the hardest times.

"Teenage genius Artemis Fowl and his arch rival Opal battle to the last in this eighth and final book in series"--

After returning the missing children from history to their original time periods, thirteen-year-old Jonah must save time itself when aviator Charles Lindbergh mysteriously appears and kidnaps Jonah's sister.

Finn and his friends travel to the Subatomic, a microscopic world where Finn hopes to find his father and defeat the Plague once and for all.

Overcome with guilt over her brother's death, a teenaged girl shifts between multiple universes in an attempt to find one in which he is alive.

"After a daring escape from the scientists who created her, Seraphina and Zen believe they are finally safe from the horrors of her past only to discover that new threats await them"--

Presents the continuing adventures of Henry York, who has been living in Kansas with his cousins, where he discovers doorways leading to other worlds and becomes involved in a multi-world struggle between good and evil.

In the middle of an Iowa cornfield, four children find a magic wall that enables them to travel through time and space.