Heart of Stone

[mamapranayama]

Title: Heart of Stone
Author: mamapranayama
Genre: Gen
Category: H/C, action
Rating: R
Word count: ~7000
Summary: Sam and Dean hunt down an ancient, legendary killer, but things don't go according to plan and Sam is the one that ends up paying the price.
Written for dither_river's prompt on the comment fic meme at ohsam      
See the prompt here: ohsam.livejournal.com/196018.html