Almost every gothic novel that shaped the genre is now in the public domain. That means you can read them free, legally, as e-books from Project Gutenberg, and listen to volunteer-recorded audiobooks from LibriVox. Here is a route through the essentials, roughly in publication order.
The 18th-century originals
Horace Walpole's The Castle of Otranto (1764) started it all: a cursed castle, a giant helmet falling from the sky, and a tyrant desperate to keep his line alive. Ann Radcliffe perfected the form with The Mysteries of Udolpho (1794) — terror that turns out to have rational explanations — while Matthew Lewis's The Monk (1796) went the other way, into sex, sin and real devils.
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The Castle of Otranto
Horace Walpole
- FREE🎧

The Mysteries of Udolpho
Ann Radcliffe
- FREE🎧

The Monk: A Romance. In Three Volumes. By M. G. Lewis
Matthew Gregory Lewis
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Vathek; An Arabian Tale
William Beckford

Italian
Ann Radcliffe
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Northanger Abbey
Jane Austen
The Romantic gothic
Mary Shelley's Frankenstein (1818) turned gothic dread toward science. Charles Maturin's Melmoth the Wanderer (1820) is the great deal-with-the-devil novel. Edgar Allan Poe brought the gothic to the short story.
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Frankenstein; or, The Modern Prometheus
Mary Shelley
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Melmoth the Wanderer
Charles Robert Maturin
- FREE

The Fall of the House of Usher
Edgar Allan Poe
- FREE

The Vampyre
John William Polidori
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Wuthering Heights
Emily Brontë
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Jane Eyre
Charlotte Brontë
The Victorian gothic
The second half of the 19th century produced the gothic's most famous monsters — and its most famous queer subtexts. Sheridan Le Fanu's Carmilla (1872), a vampire story about two young women, predates Dracula by a quarter of a century.
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Carmilla
Sheridan Le Fanu
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Uncle Silas
Sheridan Le Fanu
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The Woman in White
Wilkie Collins

The Strange Case of Dr. Jekyll and Mr. Hyde
Robert Louis Stevenson
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The Picture of Dorian Gray
Oscar Wilde
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Dracula
Bram Stoker
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The Turn of the Screw
Henry James
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The Beetle: A Mystery
Richard Marsh
More free gothic fiction
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Wuthering Heights
Emily Brontë
- FREE🎧

The Picture of Dorian Gray
Oscar Wilde
- FREE🎧

Dracula
Bram Stoker
- FREE🎧

Frankenstein; or, The Modern Prometheus
Mary Shelley
- FREE🎧

Jane Eyre
Charlotte Brontë
- FREE

The Yellow Wallpaper
Charlotte Perkins Gilman, Aric Cushing
- FREE🎧

Northanger Abbey
Jane Austen
- FREE🎧

Carmilla
Sheridan Le Fanu
- FREE🎧

The Turn of the Screw
Henry James
- FREE🎧

The Woman in White
Wilkie Collins
- FREE🎧

The Castle of Otranto
Horace Walpole
- FREE🎧

The Great God Pan
Arthur Machen
Want something to listen to on a dark evening? Every title with a 🎧 badge has a free LibriVox recording; see all free audiobooks.