Adaptations
Richard Corben and Donald Wandrei have adapted the story for the comic book format.
The Atlanta Radio Theater Company has produced a radio adaptation.
In 1973, Caedmon Audio published a cassette featuring David McCallum reading the story.
The film Necronomicon: Book of the Dead adapts three Lovecraft tales, including The Rats in the Walls, although only loosely: The segment "The Drowned" involves a character named Edward DeLapoer, a member of the family line in a different setting.
Stephen King's short story "Jerusalem's Lot" is something of a homage to this story as well, and features many similar elements.
The 2003 video game Eternal Darkness: Sanity's Requiem borrows heavily from the plot of The Rats in the Walls. It features one character, Maximillian Roivas who discovers an ancient underground city below his acquired property. He hears in the manor not rats but the creatures who possess his house servants, whom he eventually kills. This action lands him in an asylum, where he deliriously screams, "May the rats eat your eyes! I Am now lost to your cause! The darkness comes! It will damn us all!"
Exham Priory is mentioned in The New Traveller's Almanac and "The Adventure of Exham Priory."
H. P. Lovecraft's Dreams in the Witch-House, the Masters of Horror adaptation of "The Dreams in the Witch House", references "The Rats in the Walls" in a line of dialog.
Tim Uren adapted the story into a one-man play of the same name which was performed at the 2006 Minnesota Fringe Festival.
Dave Walsh adapted and performed a one-man play of the same name at the 2007 Shakespeare by the Sea, Newfoundland Festival.
Read more about this topic: The Rats In The Walls