The Expats certainly fit the bill. It took a good 200 pages to get all the pieces laid out on the board so you could see what was going on, and even then there were a few more twists to keep me guessing.
It's well written with lots of great descriptions of the Luxembourg expat community--especially the wives who uproot themselves and their lives to follow a husband's career. They are, the author says, the double exes: expat exlawyers, exdoctors, exbusinesswomen. And in the case of our hero, Kate Moore, ex-CIA. You know that means trouble.
Likeable characters, interesting set-up, and a decent pay-off. I'm afraid I'm damning with faint praise, here, but writing a good thriller is no easy feat. Very enjoyable.