Plot: Paul Murton’s loch-hopping journey across Scotland reaches the quiet lochs of the Borders, where he learns dog handling techniques at a school for sheep dogs, and then heads to some man-made lochs in the Moorfoot Hills, where he hears tell of hidden treasure. Then, in Edinburgh he discovers the story of a Dutch-speaking Scottish minister on skates and goes in search of a lost river and two long-vanished lochs in the heart of the city