Horace F. Andrews, armed with a strange wooden box, and Chloe Burke, wearing a mysterious dragonfly pendant, become entangled in a secret and ancient society striving to protect powerful devices from the evil Riven.

When he goes to spend the summer with his great-aunt in the family's old house, eleven-year-old Drew is drawn eighty years into the past to trade places with his great-great-uncle who is dying of diptheria.

Frogs rise on their lily pads, float through the air, and explore nearby houses while their inhabitants sleep. Pictures tell the story. No words except the notation of the times on Tuesday.

Tom and Eddie, identical twins and mirror opposites living on two different Earths some fifty years apart, must switch places and identities to thwart the alien scientists who threaten their planets.

On Midsummer's Eve, Dan and Una enact A Midsummer Night's Dream three times over--right under Pook's Hill. That is how they meet Puck, "the oldest Old Thing in England," and the last of the People of the Hills. Through Puck, they are introduced to the nearly forgotten pages of old England's history and to characters that can illuminate their own historical predicaments.

When a child anticipates a long-awaited day with cousins and grandparents, the child discovers every day is filled with surprises and joy, which can easily be lost if one is not present.

Bobby Pendragon is a fourteen-year-old boy who is swept off to an alternate dimension know as Denduron, a territory inhabited by strange beings, ruled by a magical tyrant, and plagued by dangerous revolution.

A girl, estimated to be sixteen, awakens with amnesia in the wreckage of a plane crash she should not have survived and taken into foster care, and the only clue to her identity is a mysterious boy who claims she was part of a top-secret science experiment.

While trying to outwit the soldiers who are occupying their small town, fourteen-year-old Daniel, who cannot lie, and Emily, who discovers she has magical powers, are inexplicably drawn to a mysterious island in the heart of the forest where townsfolk have been warned never to go.

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.