Some of the most powerful works in the Western canon are also among the shortest. You can read them in an afternoon.
The Black Cat is approximately 3,000 words — a single sitting even for slow readers. Poe’s narrator descends from minor cruelty to unspeakable violence, all while insisting on his own sanity.
At under 2,000 words, The Masque of the Red Death builds an entire symbolic world then destroys it with a single devastating image.