Holy wells are an ancient and mysterious part of the landscape, yet have been the subject of little serious study. James Rattue has been fascinated by them for many years, and has now written the first general history of wells and their religious and cultural associations. He begins the story in the ancient world, exploring the archetypal motifs present in the cult of water, then traces the distinctive development of the holy well in England, examining pagan wells and their Christianisation, the role played by ecclesiastical history and institutions, the importance of saints' cults, and the social functions of wells in the middle ages.