The guys are In Angel's car, stopped at a red light.

Booth: You were looking at my neck.
Angel: What?
Booth: You were checking out my neck, I saw that. You liked what you saw in the lab this morning.
Angel: No, I wasn't.
Booth: Just keep your distance, pal.
Angel: I wasn't looking at your neck.
Booth: I told you to eat before we left.

The light turns green and Angel steps on the gas.

They arrive at a noisy bar. A banner is haning outside "Welcome Forensic Researchers"

Booth: Four forensic happy hours and we've been to three. How come whatever we're searching for is always in the last place we look?
Wesley: I suppose it is one of the unwritten laws of being a 'dick.' Ah, a sleuth, a gumshoe, Sherlock.
Booth: All I know is you use the word 'dick' again and we're gonna have a problem.
They enter the bar. It's crowded, with a bunch of boring looking guys and even more boring-looking women.
Wesley: What say a trio of brooding demon hunters start chatting up some of the fillies? Or dance?
Angel: I don't dance. Hey, they have a juke box! God, I love juke boxes!
He starts to walk over but Booth grabs his arm.
Booth: We're here to work, not to have fun. Besides, from the looks of things, the Jeffersonian got all the hot forensic researchers.
Wesley: Thanks, Agent Booth. I don't think I could handle "Mandy" again. Anyway Angel, can't you just sniff out the vamps in here?
Angel: I can't actually. I've had this little sinus thing the past couple of days, I can't smell anything.
Booth: Yeah, those vampire super senses can be so unreliable. How about we just work like cops? Do you guys see any of the suspects here? Or is your bionic vision not working, Steve Austin?
Angel: I don't have bionic vision...
Wesley: The guy over there in the back near the bathroom, in the blue shirt. He looks like this one (pointing to a photo on the printout in Booth's hand).
Booth: Good work, Watcher. Keep looking while I go talk to him.
He goes over to the man and begins talking to him. Angel and Wesley wander around the bar looking for more suspects.
They hear a woman's scream from the alley. Booth is the first one out the back door.
------------

Meanwhile, the ladies arrive at the same bar

Angela: The guys went inside, let's just go straight to the alley, that's where the action is gonna happen anyway, right?

They see a couple embracing in the shadows. It's too dark to make out any details.

Brennan: I can't tell if they're making out or--
Angela: No, check out the angle of his neck. Remember my 3-D? He's biting her!
They rush toward the couple. Brennan grabs the guy from behind and gives him a kick that knocks him to the ground. Angela jumps on top of him pummels his head a few times with the wooden stake. In the moonlight, she finally recognizes the face.
Hodgins: Angela? Wh-- He passes out.
Brennan: (holding her stake menacingly) Why did you do it, (turning to the other person in the alley) Cam?
Cam: He tried to bite me! She tries to run, but Brennan grabs her. Cam screams loudly and Brennan punches her, twice.
Booth comes running up, sees Angela holding the stake over Hodgins on the ground.
Booth: Hodgins!?
Brennan: No! It's--
Before she can say more Cam grabs Booth from behind, transforms to a vampire, and starts to bite him.
Booth: Cam?!?! It was you? (she continues to bite). Owww.
Brennan tries to free Booth as Angel comes up behind Cam and pins her arms. Booth frees himself, rubbing his neck. He stares at his blood on his fingers, almost like it's not real.
Booth: (angrily) Let me cuff her. He gets his handcuffs out.
Welsey: You know you can't put a vampire into the criminal justice system. That's not how we deal with them.
Cam continues to struggle, growling, as Booth cuffs her
Booth: Cam, I didn't even have you pegged as a suspect. You never worked with any of the victims. I didn't even see you had ties to any of them.
Cam: No, I never did. I wanted to! (bitterly) I applied for jobs, interviewed, but they never hired me! No, they wanted Dr. Wonderful over there (indicating Brennan) or Genius Boy like Zack. Even the Bug Guy had an easier time. Never someone like me, someone that worked hard to escape from an ordinary background. I wasn't perfect enough for any of them!
Brennan: Cam, we try to catch killers and serve justice. I can't believe you would go about it this way, it doesn't make any sense!
Cam: They got justice, my kind of justice!
Brennan: Let me do it. (indicating the stake in her hand). Booth looks at Cam, trying to understand, but he nods assent to Brennan.
Brennan: I wish I could say this is going to hurt me more, but it won't. She stabs Cam with the stake, missing her heart. The stake plunges into her chest.
Cam: Owww! (then laughs menacingly) Well, there is something you can't do right, after all!
Brennan: Oh, I wasn't trying to kill you, yet. That was for what you did to those people, our colleagues, our friends! She raises the stake again. And this is for sleeping with Booth!
She plunges the stake into Cam's heart and poof Cam dusts. The empty handcuffs drop with a clang to the ground. Everyone is silent.

Hodgins and Angela: Cam slept with Booth?