And the Beat goes on

There is not much you cannot see on the Streets of this City, and a mind able to see common Incidents in their real State, is disposed by very common Incidents to very serious Contemplations.

An ordinary Traitor, Liar or Criminal will betray themselves by a small Word or Action: only an Actor, a Fool (or, worst: a very clever, wicked Man) does it with a Flourish.