Moist von Lipwig is a con artist... ... and a fraud and a man faced with a life choice: be hanged, or put Ankh-Morpork's ailing postal service back on its feet. It's a tough decision. But he's got to see that the mail gets through, come rain, hail, sleet, dogs, the Post Office Workers' Friendly and Benevolent Society, the evil chairman of the Grand Trunk Semaphore Company, and a midnight killer. Getting a date with…