Simple Genius by David Baldacci is the 3rd novel in the King and Maxwell series.
This book reached the #1 spot on the NYT bestsellers list after it was published on April 24, 2007.
Simple Genius book description
Near Washington, D.C., there are two clandestine institutions: the world’s most unusual laboratory and a secret CIA training camp.
Drawn to these sites by a murder, ex-Secret Service agent Sean King encounters a dark world of mathematicians, codes, and spies. His search for answers soon leads him to more shocking violence – and an autistic girl with an extraordinary genius.
Now, only by working with his embattled partner, Michelle Maxwell, can he catch a killer…and solve a stunning mystery that threatens the entire nation.
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