[Black Cat](https://openlibrary.org/works/OL41068W) [Fall of the House of Usher](https://openlibrary.org/works/OL41078W) [Pit and the Pendulum](https://openlibrary.org/works/OL273550W)
Severity reflects intensity, not value — “central theme” means a warning is a core part of the book, not that the book is bad.