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This subject is written on a topic in the real world and reflects factual information. This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. "The Horror at Oakdeene" is a Cthulhu Mythos story by Brian Lumley. Written in 1970, it first appeared as the title story of Lumley's second Arkham House collection, The Horror at Oakdeene and Others (1977).


A guard at Oakdeene Sanitarium is disturbed by one of his colleagues' evident sadism--and indulges an inmate's fascination with a book called the Cthaat Aquadingen and an entity named Yibb-Tstll.

Publication History[]

"The Horror at Oakdeene" has been reprinted in Lumley's collection The Taint and Other Novellas (Subterranean Press, 2007).[1]

It was translated into French as "L'horreur dans l'asile" in L'avant-poste des Grands Anciens (Néo, 1986).[1]


  1. 1.0 1.1 Internet Speculative Fiction Database, "Title: The Horror at Oakdeene."