The Rapids by Carla Neggers

Diplomatic Security Agent Maggie Spencer just wants to do her job: nailing fugitive Nicholas Janssen. But US Marshal Rob Dunnemore sticks to her side, also wanting a piece of Janssen. When Maggie responds to anonymous messages leading her back to the states, Rob joins her and they are both walking into a trap. Lots of government intrigue, a couple of murders, and an assassin looking for ten people on a "to-do-list." An ok read.