Having traveled in her time machine to the court of Kublai Khan, Kat comes to the aid of a Mongolian princess who is facing a fearful future.

During a family trip to China, eleven-year-old Mia Chen and her older brother Jake follow clues and solve riddles in hopes of finding their missing Aunt Lin and

Rare edition with unique illustrations. Hans Christian Andersen was a Danish author best known for writing children's stories including "The Little Mermaid" and

Presents a history of the ancient world, from 6000 B.C. to 400 A.D.

Traveling back in her time machine to an archaeological dig in Egypt of 1892, Kat uncovers a plot to steal historical treasures-- and blame an innocent man.