The Innocents (1961)

In Victorian England, the uncle (Sir Michael Redgrave) of orphaned niece Flora (Pamela Franklin) and nephew Miles (Martin Stephens) hires Miss Giddens (Deborah Kerr) as governess to raise the children at his estate with total independence and authority. Soon after her arrival, Miss Giddens comes to believe that the spirits of the former governess Miss Jessel (Clytie Jessop) and valet Peter Quint (Peter Wyngarde) are possessing the children. Miss Giddens decides to help the children to face and exorcise the spirits.