One of the first indicators was a picture of the furniture salesman standing next to his young daughter. He was wearing a sweater with a distinctive patch on it, that was discovered to be from an elite, Beirut Lebanon, French language school.
A very expensive tuition, it was a school for western spies who already spoke French to learn how to speak French like a native speaker, learning different accents and local dialects.
Wow! I haven’t seen that one. Do you happen to have a link?