I'll nominate three books and see if anything sticks:
The Turn Of The Screw by Henry James
I can't find a good short description of it (maybe someone else can) but it's about a governess who takes care of two children and begins to think that the house may be haunted by sinister spirits that could do them all harm.
The Haunting Of Hill House by Shirley Jackson
The classic supernatural thriller by an author who helped define the genre. First published in 1959, Shirley Jackson's The Haunting of Hill House has been hailed as a perfect work of unnerving terror. It is the story of four seekers who arrive at a notoriously unfriendly pile called Hill House: Dr. Montague, an occult scholar looking for solid evidence of a "haunting"; Theodora, his lighthearted assistant; Eleanor, a friendless, fragile young woman well acquainted with poltergeists; and Luke, the future heir of Hill House. At first, their stay seems destined to be merely a spooky encounter with inexplicable phenomena. But Hill House is gathering its powers-and soon it will choose one of them to make its own.
Ghost Story by Peter Straub
"The terror just mounts and mounts." - Stephen King
"The scariest book I've ever read....It crawls under your skin and into your dreams." - Chicago Sun Times
"In life, not every sin goes unpunished."
For four aging men in the terror-stricken town of Milburn, New York, an act inadvertently carried out in their youth has come back to haunt them. Now they are about to learn what happens to those who believe they can bury the past -- and get away with murder.
Peter Straub's classic bestseller is a work of "superb horror" (The Washington Post Book World) that, like any good ghost story, stands the test of time -- and conjures our darkest fears and nightmares.