Yes, this is really a Lovecraft/Criminal Minds crossover. I know, I know.

[electricchicken.livejournal.com]

Title: The Shoggoth Variations
Pairing: Reid / Ethan
Rating: R
Word count: 18,000+

Summary: When Ethan invited Reid and Prentiss to the Dunwich Jazz Festival, they were expectinge a relaxing weekend of drinking, music and, well... drinking. But now the festival’s guests are going missing, the manager of the local hotel has disappeared, and the very fabric of reality is starting to look dangerously thin.

Author Notes: If you’ve never read HP Lovecraft’s “The Dunwich Horror,” (on which this fic is based, sort of) you can check out the full story over here. You don’t need to have read the original to understand the fic, but as this is one of my all-time favourite horror stories, I’d be remiss not to recommend it here.

“Memories and possibilities are ever more hideous than realities.”
–HP Lovecraft


Here.