specific vampire Sam and Dean story

[strippedhalo.livejournal.com]

I'm looking for two or three related short stories, that may have been comment fics, and were written someone in Season 1, I believe. I'm fairly sure they were a crossover with Angel, though I don't remember whether the vampire in question was Angelus or Spike. In any case, there were a lot of vampires, and they had somehow captured Sam and had Dean and John holed up in a house. Sam was being used to try and draw John out, but Dean broke first, and then the vampires had both sons. I think both of them were turned, and that's about all I remember.

I hope it sounds familiar to someone!