Spycatcher, Dunn - B-

                          This is the first book in a series, written by a retired MI6 field agent. Thus, our hero is British.  Will Cochrane is the only agent designated as 'Spartan' and, as such, operates outside of normal channels. His existence is known only to the PM and his controller.  He is truly a superman spy and saves the world from an Iranian assault on the US. The details are unimportant.