Frankenstein; or, the Modern Prometheusā The original Frankenstein story, written in 1818. Shelley started writing this when she was only 18, publishing it at 20. Itās a great, beautifully written horror story, and maybe the first novel ever in the sci-fi genre. It covered so much more ground than I was expecting it to.
Other books Iād call spooky:
The Black SpiderĀ by Jeremias Gotthelf: A spooky Swiss/German folktale novella about a haunted medieval village. Itās also old (1842) but you wouldnāt really know.
I recāed House of Leaves a little while ago, which is another, more contemporary and post-modern, horror story.
I wouldnāt call Blood Meridian by Cormac McCarthy primarily a scary story, but itās amazing and the final chapter is the most chilling passage of any book Iāve ever read.