The Informationist by Taylor Stevens is a good thriller, full of quirky characters and exciting plot turns. The heroine has been described as a cross between Lisbeth Salander and Jason Bourne, and I really can't do better than that, except to add that she's less vulnerable and more lovable than Lisbeth.
For me, what made the book was the setting. There's just something about Africa that won't let go of my heart.