After tracking down incredible discoveries by Einstein and Darwin, Charlie is back. This time, the great ruler Cleopatra has left behind an extremely valuable and powerful treasure, its location encoded on an ancient stone tablet. In 30 BCE, Cleopatra and her husband, Marc Antony, lost their war against Octavian for control of the Egyptian Empire. However, Cleopatra knew Octavian was really after the mysterious item that was the source of all her...

A leveled Reader based on an episode from the PBS KIDS animated television series Xavier Riddle and the Secret Museum starring Cleopatra. Based on the children's book series Ordinary People Change the World by New York Times bestselling author Brad Meltzer and illustrator Christopher Eliopoulos, the series will introduce kids to inspiring historical figures and the character virtues that helped them succeed. Xavier wants to stay up all night to see...

"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...

When a mysterious thief steals her ancient sword, Cleo is forbidden to risk her life to reclaim it and instead embarks on a dangerous journey to attain the time tablets that could decide her fate as the savior of the galaxy.

"The time has come for Cleo to fulfill the ancient prophecy that declares her a savior and a hero, a prophecy she still struggles to accept. Cleo is joined by old and new friends as they fight to defend the galaxy she's come to call home against the evil Xaius Octavian." -- from back cover.