The Nest of Pain is a short story written by C. J. Henderson. It was first published in the 2014 anthology The Dark Rites of Cthulhu, edited by Brian M. Sammons.
Description[]
When one of the owners of the house investigated by the Arkham Detective Agency in the first story begs him to take another look at their property, Frank Nardi uncovers the immortal evil lurking in its walls. Using all of the cunning at his disposal, he is able to destroy both the entity and the means by which it has survived the centuries.