It took some investigative work and quite a bit of money exchanging hands, but Alex quickly pinpointed his targets. What their daily schedules were, and how they effectively lived their lives in Saudi Arabia.
Contrary to popular belief, no doubt spread by western cartoons. Women could travel alone in Saudi Arabia, and because of this, Alex had pinpointed what areas the two women he was after were frequently visiting, so that he might have a "chance" encounter with them.
Naturally, as the wife and daughter of the American ambassador, they were being closely watched by American security. But Alex had ways around being detected by these men. Because of this, Alex decided after a week of investigation to properly introduce himself to the daughter of the American ambassador.