Short passages? Not sure what you mean here.
Plenty of tiny sequences in Poe, inspire delight: the pendulum swinging lower and lower over the bound prisoner...the walling-up of drunken Fortunato..the tall masked figure roaming the halls of Count Prospero's castle...
Clive Barker's "Books of Blood 1-3" are a modern fave
he's deft at the short story; I'm not a fan of his novels
Chris Kelly, the doll who ate his mother..(Ramsay Campbell)
Shirley Jackson, everything...
John Farris' exquisitely written southern gothic horror...'All Heads Turn as the Hunt Goes By'. Literally had my fingers trembling; had to get up from my chair to calm my breathing.
Sexuality combined with horror:
Rachel Ingalls, a relatively unknown contemp suspense author..I like how raw she gets..unafraid to get nasty and graphic. Check her out in 'The Pearlkillers' and 'I See a Long Journey' (novellas)
Graham Masterston, 'Death Trance'. Woah. Grisly.
William Goldman, ostensibly a thriller author, comes up with something so crazy in 'Control' that I actually leaped out of my
seat.