[Doc Faustus]

Pan's Labirynth is blatantly influenced by Arthur Machen, Night of the Hunter is based on a novel by James Agee, which I hear is quite good, Duel, Last Man on Earth, The Incredible Shrinking Man and many others come from stories by the great Richard Matheson, who wrote many of the Corman Poe movies, so he's well worth your attention, Psycho was a great book by Robert Bloch, Night of the Demon was M.R James' Casting the Runes, Day of the Triffids and Village of the Damned were based on books by the great John Wyndham. But, if you're looking for eerie, atmospheric horror in the same vein as HP Lovecraft, check out Robert W. Chambers' The Yellow Sign.