[Facts in the Case of M. Valdemar](https://openlibrary.org/works/OL40987W) [Fall of the House of Usher](https://openlibrary.org/works/OL40987W) Ligeia [Masque of the Red Death](https://openlibrary.org/works/OL41050W) Ms. Found in a Bottle Murders in the Rue Morgue Oval Portrait [William Wilson](https://openlibrary.org/works/OL16088822W)
Severity reflects intensity, not value — “central theme” means a warning is a core part of the book, not that the book is bad.