Choose Your Own Adventure books-the 4th bestselling children's series of all time-now include historical fiction, in which you're an actual historic spy! Kids and adults agree, these are the books that get 9- to 12-year-olds reading.

It is circa 400 A.D. and YOU are a young person living in ancient Greece. You are studying with the powerful philosopher and mathematician, Hypatia. Hypatia's formulas and inventions will change the course of history, but she can't let go of an event from the past. She needs you to travel back in time to the age of Cleopatra in order to change history so the Library of Alexandria can be saved from destruction by fire. Can you do what's needed to preserve the world's most important knowledge? Be careful, the choices YOU make might end in glory, disaster, or certain death.

Recommended by teachers and librarians for educational features including:

• Classroom materials available upon request.
• Learn about ancient Egypt in this historical fiction story.
• Delineate fact from fiction with back matter that teaches you the true story that inspired the book.