Damn your eyes for mentioning THE HAUNTING…now I look unoriginal for citing, first off, Shirley Jackson’s THE HAUNTING OF HILL HOUSE (1959), the book on which the films were based.
CONJURE WIFE by Fritz Leiber (1943). Guess what; witchcraft is real, and ALL women use it. Including your spouse. Don’t mess with those fetiches you find around the house, you could get the whole family in REAL trouble.
THE SOUND OF HIS HORN by Sarban (1952). Guess what…it’s 2045, the Nazis won the Second World War, and you’ve just awakened from a 100-year coma. Gee, things are different…of course, you’re only seeing a small part of the world, a massive hunting lodge and grounds staffed with untermenschen avaiable to be hunted down by party leaders. Steals a bit from “The Most Dangerous Game,” but what atmosphere!
JOHNNY GOT HIS GUN by Dalton Trumbo (1939). Blind, deaf, no arms or legs. Yike.
THE KING IN YELLOW by Robert W. Chambers (1895). Five interconnected stories, the most nightmarish of which is “The Yellow Sign.” Big influence on most 20th century weird fiction, due to its introduction of the concept of a mysterious, terrifying book that screws with peoples’ heads. See Lovecraft’s NECRONOMICON.
THE CONFIDENCE-MAN; HIS MASQUERADE by Herman Melville (1857). Deception, lies, obscure jests…the unsettleing laughter of the cosmos, and the joke’s on you, sport.
HEART OF DARKNESS by Joseph Conrad (1902). Have fun at the Inner Station.
And of course, any good collection by M.R. James and H.P. Lovecraft. Sure, you read 'em as an adolescent, but try them again…you had pretty darn good taste for a little shaver. Especially “Count Magnus” and “The Shadow Over Innsmouth.”