ANYA: And you believe him?

BUFFY: You didn't see him down there. He really didn't know what he'd done. It wasn't in his control.

XANDER: Oh, an out of control serial killer. You're right, that is a great houseguest.

DAWN: Wait, is he?-is he staying here?

BUFFY: I don't know. But I'm not letting him out of my sight, that's for sure.

WILLOW: Buffy, he's been feeding... on human blood. That's gotta do stuff.

BUFFY: I'm not keeping him around just to help him. I think there was something there, talking to him, making him do things.

WILLOW: Something like what was talking to us?

BUFFY: Maybe. But if it was, it's been screwing with Spike big time.

XANDER: So, you want him around because...?

BUFFY: Look, there's something evil working us, and if we are ever gonna have a chance to fight it, we need to learn everything we can about it. This thing has been closer to Spike than any of us.

WILLOW: And if you want to understand it....

BUFFY: I'm gonna have to get close to Spike.

XANDER: Nah, it's too dangerous.

BUFFY: I don't have a choice. Whatever this thing is, from beneath us, it's bad, and it's only getting worse.

• Buffy & Spike
• From Beneath You it Devours

written by: David Fury and Jane Espenson; Transcribed by: CariCranberry. Edited by me.. Full transcript at:
http://www.buffyworld.com/buffy/season7/transcripts/130_tran.php