Soon after the apparent suicide of a close friend, Christopher Cornwell receives several photos the friend mailed before his death. Lee Harvey Oswald is in one of the pictures—but how could Oswald be photographed in a small English village when he was supposed to be living in Russia as a defector at the same time? The mystery deepens as Cornwell becomes the target of a shadowy agency as determined to keep its secrets now as it was in 1963.