From the back cover: What's locked in his mind will rock the world. Sixteen-year-old autistic savant Simon Lynch is a genius with numbers, capable of unraveling any mathematical problem placed before him. Distant and solitary, he lives in a private world that no one can understand or enter..until he solves the wrong puzzle. Now the brilliant, damaged boy has broken an unbreakable code, and rogue FBI Special Agent Art Jefferson is his only protection against a pathological government security apparatus and the world's most beautiful, deranged killer. For Simon knows secrets that no one must know...and for that he must die.
An autistic child gets a copy of a puzzle the FBI cryptographers planted into a Genius-level magazine. Basically, the kid sees the puzzle, solves it in about a minute, and then does what the puzzle solves into: instructions to call a number listed and tell that he solved the puzzle. When he does, he's targetted for "removal."
Putting the FBI into a tailspin of potential disaster - who is this person who called and cracked the code? And what will the man in charge of what is now a 10 million dollar mistake do to this child? The tension begins to rise... Enter Art Jefferson, who is the one man who might be able to keep this autistic child alive long enough to get him to some sort of safety.