We last left our two teams of investigators at the crime scene in an alley somewhere in Los Angeles:

Booth: We'll take the body back to the FBI lab here for analysis. I'll have the prior victims delivered there as well.
Brennan: That works. We've got a portable version of the Angelator here that we were using for our demo at the seminar. I'll have Zack set it up there.
Booth and Brennan hop into the back of the morgue truck.
Wesley: I would really love to see you at work, Dr. Brennan, might I--
Brennan: Wesley, right? You said you were reading one of my books? Bred in the Bone?
Wesley: No, the first one you wrote on forensic methodology to--
Brennan: Well, in that case, I think we can arrange to have you observe.
Booth: Bones, I don't think that is such a good idea.
Brennan: He can't hurt anything by watching.
Wesley: I won't. In fact I'm a professional Watcher; I used to be a employed by the Watcher's--
Booth: You mean you're some sort of professional pervert?

Booth closes the door to the morgue truck as Wesley tries to answer.

Wesley (to Angel and Cordelia): They've invited us back to the FBI lab.

They get in Angel's car and head to the FBI lab.
After some explaining at the front desk, they are let into the lab. Brennan, Zack and Booth are discussing how to proceed with the exam as Wesley watches. Angela goes over to sit with Angel and Cordelia on the other side of the lab.

Angela: So, how do I know you're really a vampire?
Angel: Trust me.
Cordelia: Why don't you just "grrr" for her?
Angel: I'd really rather not, it's counter-productive in most cases.
Angela: Grrr?
Angel: Don't ask. Well, for one thing, I don't have a pulse or a heartbeat and I don't breathe.
Angela: Really? Can I? (reaching to touch his chest)
Angel: OK...
Angela: I can't feel anything in there. Ooh, your kinda cold too.
Angel: No body temperature. I'm pretty much room temperature.
Angela (shouting across the room) Brennan, this is so cool, you have to check him out! No pulse!
Brennan comes over, Booth slowly follows her, trying to appear uninterested in the whole thing. Brennan grabs a stethoscope from a drawer and listens to Angel's chest.
Angela: See, he's got no pulse, no cirulation, no breath, no temperature, he's--
Brennan: Dead.
Angel: Pretty much sums me up.
Booth (quietly, to Angel): No circulation? (waves his index finger around in a circular motion).
Angel: Uh, no.
Booth: So, can you--? Does it--? (points his finger upward suggestively)
Cordelia: Yes, it does and he can. Trust me.

Everyone looks at her. Angel looks embarrassed by the whole topic. Angela, on the other hand, is extremely interested in the whole discussion.

Cordelia: Not, from my own personal experience or anything! But it definitely works like it should. Or maybe shouldn't...you know, after the gypsies and all.
Angela: What's this gypsy thing?

Zack: (From across the room) Dr. Brennan, Angela, we've got some results for you to look at. They go over to him.
Zack: I've taken some data that should help us recreate the bite marks on the victims. We can compare it to the other victims to see if it's the same biter. That will have to wait until we get the other bodies.
Brennan: Great, we still need some more tests on the soft tissue. Where's Cam? I thought she was meeting us here?
Zack: I haven't seen her at all today. I thought she had gone to the scene with you. Come to think of it, I haven't seen Hodgins in a while either. (Da da dun!) Did anyone else hear that?
They all roll their eyes at him.

Meanwhile, Wesley, Angel and Cordelia discuss the case.

Cordelia: You know, this reminds me a whole lot of that donkey demon from Season 1.
Wesley: Burrower demon, burrow-ER, not burro, not donkey.
Cordelia: Well, whatever, it makes a big hole in people, just like that big hole we saw in that person! (she points towards the body on the other side of the lab)
Angel: That's true, but it doesn't explain the fang marks. A vampire wouldn't feed on a person that had that amount of damage to their body.
Wesley: And the burrower demon couldn't leave a body after a vamp had fed on it. But the body has elements of both. There's something we're missing here...
Cordelia: Could they be working together? The donkey and the vamp?
Angel: I've never heard of anything like that. Let's go back to the office and dig into the books.
Angela: Before you go, make sure we know how to contact you! (looks flirtatiously at Angel)

They leave, after telling Brennan and her team their ideas.
Just as they are leaving, Cam shows up at the lab, looking annoyed, some drops of blood on her usually impeccably neat clothing. She sees Angel and gives him a long look as he walks past her out of the lab. He turns around and stares after her, as she walks over to Brennan and the body.

Brennan: We must have gotten our signals crossed, we thought you were meeting us here and not at the scene?
Cam: Right, I ended up at the scene and didn't see anyone from our team. There was a lot of blood but no body when I got there. I don't exactly understand why they called our team on this one? And who are those people that Booth is leaving with?
Booth (getting up from a desk nearby): I'm right here.
Cam looks surprised, glances back at the door where Angel's receding back is still visible.
Cam: Wh--? I must be seeing things. Booth would never wear that coat anyway.
Booth: Hey, I'd look just as good in that coat. Better!
Angela: What about the hair?
Booth: Not the hair. Never the hair.
Brennan (to Cam): Zack has done a lot of work, but we still need you to run some tests while Angela does a 3D mock-up of the attacker.
Cam: I'll get right on it, what do you need?

to be continued