I don't know if it's particularly *scary*, but it is thematically appropriate--A Night in the Lonesome October, Roger Zelazny. I'm reading it right now, for the first time, and having a fabulous time trying to figure out who all the players are. The only catch is it's wildly out of print, so you may have to seek out a library or a Perfectly Legal PDF.

Self-seeding? Volunteers?