The Witches (1967)

Following a nervous breakdown, Gwen takes up the job of head teacher in the small village of Haddaby. There she can benefit from the tranquillity and peace, enabling her to recover fully. But under the facade of idyllic country life she slowly unearths the frightening reality of village life in which the inhabitants are followers of a menacing satanic cult with the power to inflict indiscriminate evil and death if crossed.