Banagher Glen outside Dungiven, and Charlie Witherspoon tells the story of St Murrough O’Heaney, who confined the last serpent in Ireland within the stream of the glen. Charlie visits the old church where Murrough O’Heaney is buried and meets Paddy Heaney, a direct descendant of the holy man. Paddy tells of the power of Banagher sand which has special properties for cures and in law suits.