James Boudreaux is an agent with the CIA.
Truth be told (and why would I lie) in the four adventures that exist about this operative, it is never once that the CIA is ever mentioned so to say he works for them is an assumption. The name Langley is used quite a few times to talk about his employer's headquarters and since the only thing really in that community in northern Virginia is the CIA, that is the assumption I make. In the introduction to the stories, however, it is clearly stated that he is "an officer with an undisclosed affiliation to an American intelligence service" so my assumption could be wrong.
The adventures all form one big storyline in which Boudreaux, working with the beautiful, seductive, insightful, and clever Rainbow, goes up against a very interesting opponent known as the Slovakian. Each of the four (with a fifth being promised but as yet not released) segments have a beginning and an end but they all comprise the larger hunt for and fight with the woman nicknamed the Slovakian.
We meet up with Boudreaux as he is trying very hard to not get killed in Belarus. It is on a Monday which Boudreaux tells us is always a particularly bad day of the week. It seems every time he has almost died in his life so far has been on a Monday. He is always diligent in his work but even more so on Mondays.
A lot of the action for these adventures take place in Hawaii, a state that Boudreaux knows very well and loves dearly. It is there he will meet and become friendly with the alluring Rainbow, or she will meet up with him, depending on your point of view. The important thing here is that wherever the two may go, they find their way back to the 50th state and from the way they describe it, I would too.