The Pied Piper exacted his revenge upon the German town of Hamelin this day. The townspeople had promised to pay the piper a large fee if he could rid their town the nasty rats running all over the place. He had played his trusty pipe and the rats had followed him out of town and into the River Weser. But once the rodents were eliminated, the local folks decided not to pay after all. The piper was not pleased and repaid the townspeople by playing his pipe for the children of Hamelin, just like he had done for the rats. And just like the rats, the children followed him out of town. The Pied Piper of Hamelin led the kiddies into a hole in a hillside. They were never seen again.
Source: Those Were the Days