Barry Cunliffe presents the programme where the past speaks to the present. In 1284, or so legend has it, the mysterious Pied Piper rid the Westphalian town of Hamelin of a plague of rats. When the ungrateful councillors failed to pay their benefactor, he piped a different tune and took their children. Sean Street visits the medieval town. Researcher FELICITY GOODALL Producers KATE MCALL and JOHN KNIGHT. BBC Bristol