When you go after a spy, you send another spy. The same goes for con artists. To catch one, you've got to beat him at his own game, be a better liar than he is. No matter how good your cover identity is, you've gotta sell it, and that's not always easy. Sometimes you have to decide just how committed you are to pretending you are who you say you are. I don't like running from cops, but it has its advantages. It builds your credibility with a criminal when you flee a crime scene.