First chapter of a book by Diego Gambetta on the criminal economy.

Once someone intent on crime identifies a potential partner as a bona fide criminal, he has solved one problem only to land in another, equally difficult, one. He now has to establish whether his partner is not just a crook but an honorable one. After Hugh Grant exposed himself, Divine knew that he was not an undercover cop, for she believed that cops do not do that.Yet she still did not know what kind of a customer he was.

Ah les règles du jeu! Pic semi related.