Gregg Hadyn is a thief.
He is not an agent with the SIRU, despite what it says above and despite what the Director of the intelligence agency, Strategic Intelligence Response Unit, might want. Hadyn is a thief. More specifically, though he does not exactly limit himself, he is a diamond thief and he likes to think he is the best there is. The many museums deprived of their prime exhibits and private owners suddenly out their prized possessions and insurance companies who have had to hand out over a billion dollars in recompense - they would also have to agree he is a thief and he is the best they have had to deal with.
To Denny Garrett, the SIRU Director, Hadyn is also a thorn in his pride. Before he got the job of Director of the newly established SIRU, Garrett had been a dedicated FBI agent and one of his most noteworthy targets was Hadyn. Garrett knew it was Hadyn behind a long string of high profile robberies. Indeed, everyone knew it was Hadyn. Proving it, though, was a different matter let alone catching him in the act.
For almost the entire dozen years that Hadyn had been pulling off impossible snatches, Garrett was on his trail and always coming up short. When Garrett was moved to the new position, the failure continued to irk him. It also gave him an idea. What if someone of Hadyn's incredible and frustrating abilities put those talents to use for the government? There were many times that getting in and out of a target site without being detected was a hopeless dream. It would not be to someone like Hadyn.
That's when Garrett got the idea that if he could not catch Hadyn fair and square, he might nab him some other way. It was a crazy idea but it worked. Hadyn would become a thief for the intelligence community. Garrett would learn that sometimes getting what you really want does not work out like you expected.
--I am on my 4th book of the series. More when I finish the others.