Look around at these people, monsieur.

Look around carefully.

Tell me whether you do not see something different here from the other places." I followed Louis' advice.

I looked around at the people with an interest which grew rather than abated, and for which I could not at first account.

Soon, however, I began to realize that although this was, at first appearance, merely a crowd of fashionably dressed men and women, yet they differed from the ordinary restaurant crowd in that there was something a little out of the common in the faces of nearly every one of them.