We visit the last church to be built in Scotland before the Reformation to discover some of its later history. In 1659, the Covenanter Alexander Peden was here and about to begin his ministry when some dramatic events threatened to put a stop to it. It was said that his anguished prayers could be heard as he paced up and down by the side of the river on stormy winter nights. Jimmy Fisher explains what happened and the significance of Alexander Peden in this episode.