Okay, so call me a pig-sucker

It seems like all I ever do anymore is ask for stuff. But I really do need a favor. This is driving me crazy.

I've been looking for this really dark fic that I read a LONG time ago. I think it was called Bloodlines. I KNOW it was written by Memnoch. It was an Exorcist-esque fic and extremely dark, where Xander was possessed by a very evil demon, possibly even Satan himself.

Any help would be appreciated.

Thanks.