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...

"Math-genius mercenary Cas Russell has stopped a shadow organization from brainwashing the world and discovered her past was deliberately erased and her superhuman abilities deliberately created. And that's just the start: when a demolitions expert targets Cas and her friends, and the hidden conspiracy behind Cas's past starts to reappear, the past, present, and future collide in a race to save one of her dearest friends."--Publisher.

Zoe Maisey is a seventeen-year-old musical prodigy with a genius IQ. Three years ago, she was involved in a tragic incident that left three classmates dead. She served her time and now her mother, Maria, has resolved to keep that devastating fact tucked far away from their new beginning, hiding the past even from her new husband and demanding that Zoe do the same. Tonight Zoe is giving a recital that Maria has been planning for months. It needs to...

Cas Russel has decided to Fight Crime. She definitely doesn't have a cape, and she's working on the whole morals issue, but she does have a real-life superpower: with her extraordinary mathematical ability, she can disarm bombs or outshoot an army. But Cas's own power also has a history, one she can't remember or control. One that's creeping into her mind and fracturing her sanity ... just when she's gotten herself on the hit list of every crime lord...

The Electroclan embarks on a daring rescue mission when Michael Vey goes missing in this final volume of the series.