Spike working w/ Angel try to flush out a Demon/Vampire Club; Buffy goes undercover inside club

All I remember was that Spike was working with Angel(I think) in trying to flush out some kind of vampire or demon club where humans were being led in. He was being cold to Buffy, but Buffy is kinda forcing herself into the mix and volunteers to enter the club and there's some kind of human mind control thing going on and when the demons realize who Buffy is they chase after her, shooting her with darts I think and as the gang comes to save her, she is outside the club and collapses into Spike's arms, falling asleep

Any help would be much appreciated.

It's easier if you post two fic searches in two posts (my opinion) because it's easier to see if both were found. I know I know the first one (remember).....

I think the story you're looking for is / could be Thought you should know by angearia.
It's here @ TSR too but way more chapters @ LJ.

Thought You Should Know - Chapter Index
The scene is in chapter 10 or better end of chapter 11.

Was that the story?

The story sounds like greyangel's LA Nights(WIP), which is on this site. (Sorry, tried to include a link but it looked weird in the preview... I'm sure you can find it with a simple search)

Summary: When Detective Elizabeth Summers has to investigate the deaths of several young women, she is led into the dark and menacing world of Goth vampires. Here she meets Liam O'Conner and William Blood, owners of the exclusive Goth club, The Hyperion. A club supposedly frequented by vampires, witches and pagans.
Only Buffy doesn't believe in vampires. Yet, on meeting the two men, Detective Summers can sense there is something very different about them. To help her catch the killer, they offer to show her their world. AU. Present day. Human Buffy to start with but then she goes Slayer.

Oh wait! I take it back! The first story IS "Thought you should know". I read the scene that cordykitten pointed out but when I went through the following two chapters, it fit right with my jumbled memory of this story.

So, yep, my first find-a-fic post has officially been solved. Again, many thanks!