Ava Blok travels back in time to fix her family.

Sam Faulkner travels back in time to medieval Ireland, ancient Egypt and Renaissance Bruges in search of his missing father.

During World War II, a Czechoslovakian Jewish boy is sent to northern Scotland to live in a castle that houses gifted children who are learning to harness their magical powers to support the Allies' cause.

Children's birthdays are always strange in Willow Falls, but when Connor's little sister Grace falls into a frozen state on her tenth birthday, Amanda and Leo must travel back in time to find out what force prevented Angelina from casting the blessing that would have protected her.

When Larissa Renaud starts receiving eerie phone calls on a disconnected phone in her family's shop, Bayou Bridge Antiques, she finds herself directed to the river bank near her house, where a cloud of fireflies take her on a journey through time to learn the secrets of her family's past--and save their future.

Geronimo travels through time to Alexander the Great, Cleopatra, Francis Drake, and a young Mozart.

Finds Max on the run from Corporation thugs before the Change Maker kids begin working on a plan to end world hunger, a challenging goal that is complicated by mysterious clues about Max's unknown family.

While seeking the seven magical coins that will allow him to reach his father, who is trapped in the castle of Vlad Tepes, Sam Faulkner travels to such places as ancient Delphi, a Stone Age cave, and 1930s Chicago.

Once again, Artemis will have to pair up with his old comrade, captain Holly Short, to track down the missing demon and rescue him before the time spell dissolves and the lost demon colony returns violently to Earth.

The mysterious box that Ranger the golden retriever found in the garden transports him back to first century Rome, where he must rescue Marcus, a young servant boy, and Quintus, a volunteer gladiator, from the brutal world of the Colosseum.