This story started out as a story I might like: an older couple is newly married but both have previous marriage that ended in death or divorce. One night, the husband thrashes, groans and grunts with a bad dream. And it happens again. And again. When the wife confronts him with it, seeking to comfort him, he denies he was dreaming and accuses her of being the one that had a bad dream. This goes on and on and on. Leeches enter the plot. It morphs into horror. Has he killed his first wife. The second wife can find out little about her even from people who should know the story. The reader doesn't know if she is mentally ill or if he is trying to kill her. It ends ambiguously and is apparently part of a longer work.
This was so, so long. Although the writing was good, I just don't care for horror stories on the whole. You can listen to JCO read it on THE NEW YORKER website. If you dare....