MURDER BY MOLE

For nearly 40 years he traveled the world committing murder, without using any weapons nor having his deadly efforts discovered. For America's National Security Agency, the ordinary-looking businessman named Jack Simpson performed his duties perfectly as a deep cover agent -- a mole -- remaining buried and out of sight until called upon by Uncle Sam. Neither his family nor his regular employers were aware of his secret life. As far as they knew, he had been a journalist and a computer executive. They thought he was ready to retire. Only he understood that exactly as had happened during the last four decades, "Number Twelve" at any moment, anyplace on Earth, could still be assigned a new target. And if he ever wrote a book describing his clandestine activities, it could be considered an act of treason.