A review by retiredlibrarylady
Charlie Thorne and the Last Equation by Stuart Gibbs

4.0

Entirely implausible and, indeed, impossible, but ever so exciting and fun to read. The author of several other YA series, including Spy School, Stuart Gibbs knocks it out of the ballpark. This one? Think Alex Rider, only it's a 12 year old brainiac girl with an attitude. Recruited by the CIA to help find a secret code left behind by Albert Einstein, Charlie Thorne is reluctant but gets into the serious "caper". Hopefully the start of a series.