You can't run from the past

Sequel to Bringer of Terror. When Blair Sandburg calls in the Winchesters for help with a weird case, Dean and a recently re-souled Sam see this as the perfect chance to get back in the saddle. But it might turn out that at least one of them could be a target for this new evil. Set three years post-series for Sentinel and post 6x12 for Supernatural. Case fic.