The House on the Borderland

A fantasy/horror novel by William Hope Hodgson, who also created Carnacki, the Ghost-Finder and The Night Land. It was first published in 1908. HP Lovecraft said "but for a few touches of commonplace sentimentality [it] would be a classic of the first water."

Some friends visiting Ireland find the curious ruins of the eponymous house, and an old diary of the man who was presumably the last inhabitant of it. The majority of the story is the contents of the diary.

Here's a link to an online version of the entire novel at Project Gutenberg. It comes in several formats, including HTML, EPUB, Kindle, and TXT.

Was adapted in The Noughties as a one-volume Graphic Novel by Vertigo Comics, with Richard Corben on drawing duties.

This story includes examples of:

 * All There in the Manual:
 * A possible explanation for who the Swine Things were can be found in Hodgson's Carnacki story, The Hog. It really depends on whether they're set in the same continuity or if Hodgson was simply reusing a concept. That said, the Mind Screw doesn't completely go away because The Hog does nothing to explain the House itself.
 * The name of the framing story's narrator ("Mr. Bereggnogg") isn't revealed anywhere in the book except the title page, which a lot of readers would typically skip.
 * Apocalyptic Log: The diary.
 * Apocalypse How
 * A Boy and His X: A man and his dog.
 * Brother-Sister Incest: Incestual context was added to the graphic novel, which displeased some fans of the original book.
 * Cool Old Guy: The Recluse, at least when he's
 * Cosmic Horror Story: A precursor, in any case.
 * Eldritch Location
 * Framing Device
 * Genre Shift: Subverted. It starts out as Cosmic Horror, then quickly turns into a mix between Action-Horror and Mystery but then goes right back to Cosmic Horror in the second half.
 * Haunted House
 * Heroic Dog: Pepper.
 * Mind Screw
 * No Name Given: The diary's author.
 * Pig Men
 * Posthumous Character:
 * Thematic Series: This book is the second installment of what Hodgson referred to as a trilogy. None of the three books share the same characters. In terms of plot and setting, the first and third books in this trilogy - The Boats of the "Glen Carrig" and The Ghost Pirates, respectively - don't have all that much in common with each other and have even less in common with House.
 * Things That Go Bump in the Night
 * Unreliable Narrator: It's possible to intepret everything as delusions brought on by the Recluse's excessive grief and possible dementia (his sister seeming to not be aware of any of the supernatural stuff certainly supports this notion)..
 * Unreliable Narrator: It's possible to intepret everything as delusions brought on by the Recluse's excessive grief and possible dementia (his sister seeming to not be aware of any of the supernatural stuff certainly supports this notion)..