Charlie Thorne is a genius. Charlie Thorne is fearless. Charlie Thorne may have finally met her match.

Charlie Thorne is used to being on the run. Ever since she was recruited by the CIA to track down Einsteins most dangerous equation, Charlieand former CIA agents Dante Garcia and Milana Moonhave traveled around the world to prevent historys greatest discoveries from falling into the wrong hands. But after beating others to the secrets hidden by Einstein, Darwin, and Cleopatra, they find they are not the only ones searching for an immensely powerful discovery of Isaac Newtons.

From a chase over the rooftops of Cambridge University to scaling the Sydney Harbour Bridge to skirting a volcanic eruption, Charlie will need to think one step ahead of her opponents to follow Newtons trail of devious clues and keep herself out of the hands of the many enemies who are hot on her tail.