Books like The Facts in the Case of M. Valdemar

This is one of the eeriest and most morbid stories I ever read from Poe. The narrator describes a mesmeric experiment on a dying man named Valdemar. The person acts in a peculiar way when in a mesmeric trance induced in the moment of death. What does the hypnotist do and how long can the mesmeric condition be sustained? The end of the story is extremely ghastly too. Nothing for the faint hearted. You really have to be a bit morbid to enjoy the action here but it is written and plotted in an excellent way. Absolutely recommend this real creeper!