The Turn of the Screw
One night a ghost appears before the governess. It is the dead lover of Miss Jessel, the former governess. Later, the ghost of Miss Jessel herself appears before the governess and the little girl. Moreover, both the governess and the housekeeper suspect that the two spirits have appeared to the boy in private. The children, however, adamantly refuse to acknowledge the presence of the two spirits, in spite of indications that there is some sort of evil communication going on between the children and the ghosts.
Without resorting to clattering chains, demonic noises, and other melodramatic techniques, this elegantly told tale succeeds in creating an atmosphere of tingling suspense and unspoken horror matched by few other books in the genre.