"A three-hour drive from Washington, D.C., two clandestine institutions face each other across a heavily guarded river. One is the world's most unusual laboratory, whose goals and funding are a mystery. The other is an elite CIA training camp shrouded in secrecy. Now a man and a woman are about to run a gauntlet between these two puzzle factories, straight into a furious struggle to exploit a potentially world-shattering discovery -- and keep some...