After he has rescued a train from a suicide terrorist bomber, the expert war man David Budd is selected to be the private bodyguard of the home secretary. In his new job, he has to go through a series of exciting and action events and he does whatever he can to protect the minister.
It runs like explosive clockwork, and even when you know that the conversation has turned too damned quiet, the shock and awe of the "maybe gunfire" is irresistible.