Grayson Lorimer is a corporate troubleshooter.
Before he got enmeshed in international intrigue and plots, Grayson Lorimer was a personal assistant to a middle manager who really didn't need a PA but certainly enjoyed having one. To Lorimer it was a job that paid alright and his attitude towards his immediate supervisor was largely one of bemusement. Certainly Lorimer never wished for more excitement in his life, though that came to him anyways.
When a very routine assignment came up for someone to do some hand-holding in a Middle Eastern country, Lorimer was picked mainly due to no one above him wanting to go and his supervisor not having a ready reason why he was indispensible. So with passport and suitcase, Lorimer was away.
The simple task would prove of enormous significance and when Lorimer, through insight and tenacity, not only uncovered a diabolical plot but also came up with the solution. As a result, the Chairman of the giant conglomerate for which he worked decided to make better use of Lorimer's skills. The position of Troubleshooter was created.
Throughout the three-book series, the two qualities mentioned before, insight and tenacity, play a major role, overcoming the other shortfalls that an average man has in un-average situations. The classic amateur versus professional is much in play, but while that often means a bumbler as the amateur, it certainly does not in this case. Lorimer is not trained in combat or intrigue or gunplay but he is no bumbler.
Though he is considered a Troubleshooter, he doesn't think of himself as anything special. He just takes each job as it comes and hopes he comes out alright when it is done.