It's about one year to-the-day since I was in France on holiday with my father. It is a trip of which I have such fond memories. One of them occurred within our first few days in Paris.

We had just landed and were standing on the bus on the tarmac, waiting to be shuttled to the terminal to get our bags, when this man walks on and stands, holding on to the pole, right in front of me.

He surely looked familiar, but I wasn't positive at first so I waited for him to turn around again. An...