David Hill is an adventurer.
He is not a spy. He probably doesn't really belong in this compendium at all, although I have seen other list him as such. Hill is a man who craves excitement and is too willing to accept it for his own good. He is also a wanted man in Mexico who remains in Mexico because he owes the Syndicate and they want him there.
At the beginning of the series, Hill was the owner of a very successful management consultancy in San Francisco. He had plenty of money to do as he wanted and he wanted to fly. His plane, a Cessna 310, was his pride and joy and he went everywhere with it. The hours behind a desk were more than compensated by the hours in the air.
One of those places that he took was a quick trip to Mexico at the urging of a close Mexican friend. Pop down below the border, pick up a load of marijuana, and bring it back for a lot of money. Simple. Except for the Mexican authorities and arrest and conviction and incarceration in a very unpleasant prison. The Syndicate broke him out but now they feel they own him.
So he is forced to remain in Mexico and live under the alias of David Collado. His hair is dyed black and a mustache grown to better appear Latino to make this 40-years old fugitive appear to be a Mexican citizen.
The three-book series consist of three different adventures Hill has with his plane and his friend Vasquez. Each is really a heist but what makes the series interesting is the cat-and-mouse game Hill must play twice; once with the Syndicate who want his involvement to be more than he is willing, and second with the American authorities who would love to pin something on him for their own plans.