There are rules for private informers accepting a new case. Never take on clients who cannot pay you. Never do favours for friends. Dont work with relatives. If, like me, you are a woman, keep clear of men you find attractive. Will I never learn? In Ancient Rome, the number of slaves was far greater than that of free citizens. As a result, often the people Romans feared most were the enemies at home, the slaves under their own roofs. Because of this, Roman law decreed that if the head of a household was murdered at home, and the culprit wasnt quickly discovered, his slaves--all of them, guilty or not--were presumed responsible and were put to death. Without exception. When a couple is found dead in their own bedroom and their house burglarized, some of their household slaves know what is about to happen to them.