He was getting ready to kill them all, but then decided why not have some fun? So he snuck off to make his plans on how to kill these four people his master hadn't managed to. His master had always made sure only one of them was seen. They were both tall, and tortured people usually don't stop to think if their attackers are switching off, so there was no way they could know.
They had measured the damage done on each of the bodies. They measured the amount of power for each blow, then they realized something funny. All the first blows were much weaker than the second, and always in that order on the victim. Plus, a few hairs had been found that weren't the victims and were the same types on each of the victim's clothing one was blond, one was red. Maybe they were wrong, but still, if there was two killers Booth and Brennan would want to know. They had to know. Then they got a text from Booth. "We got him. He's dead." Angela replied "Why won't Bren answer her phone! This is important! There may be two killers!" Booth didn't text back. It made sense, because now he had to protect Brennan again. I bet he was bringing her to the Jeffersonian, she would probably make him once he told her. She would need to see the evidence for herself.
She noticed Booth's muscles tighten as he read the text. Then he grabbed her and started running, and then he yelled at the still confused/ stunned police officers to 'get the hell out of here!' So she figured there was something else going on. Something bad. When they got in the car Booth eased up a bit. So the car was safe, for now. Finally she had to ask.
"Booth! What's going on!?"
"There-there's." A tear was running down his face. What could make Booth cry? "There's another killer." She just found out. Her, in danger.
"Booth, It's okay, we're safe now." She said, leaning in closer to him, leaning her head on his shoulder. He was completely freaking out. He had tears creating rivers on his face. He kept muttering 'no, no.' He was losing it. She didn't know how to help him. She just tried to use soothing words.
"Booth, I'm fine, I'm right here. Don't worry, it's ganna be okay." He started to breath normal. He was trying to calm himself. He pulled up to the Jeffersonian and parked, trying his best to compose himself. Then they went inside. Booth was still trying his best to look calm. He held her closer to him than they usually walked around at work, but she was completely fine with it. She leaned on him, for own sake, to keep him calm. He leaned over and kissed her head, as if trying to reassure her. But she knew he was trying to reassure himself. He was so worried. He directed Hodgins to get a first aid kit, then led her to Cam's office. It took her a second to realize why he was getting these things, the first aid kit and the medical doctor, but then she felt something cool on her forehead that was probably blood, and realized she couldn't move her right arm. Her body hurt all over as well.
"Cam!" He said, trying to fake calmness and hide his sobs as he spoke, "We need you." Cam walked in, took one look at Brennan, and hurried over to her.
"Hodgins!" She yelled, not realizing he had just walked in the room.
"Got it." He said. She took it and started with Brennan's head, realizing later about her arm when she bumped it. She made a makeshift splint while muttering to Booth about the proper use of emergency rooms. Brennan suddenly realized she was feeling dizzy, as if she was about to black out. The whole experience she was seeing looked strange this way, but she fought the sensation, she would have to focus hard on something else if she was going to be able to make it through without blacking out. He must of hit her head pretty hard. She looked for something to focus on. She felt booth next to her, his body heat radiating off of him, and his arm wrapped around her. She leaned into him and smiled. Him being there had made her completely forget about the pain. He leaned down and kissed her, and she felt a warm drop on her head. He was crying, he had given in. Finally someone spoke to her. It was Cam
"Dr. Brennan, are you okay.?" She didn't even feel the pain. She would be fine, as long as Booth was there. Cam turned to Booth. "What happened to her!"
He- He got her. He was going to ki-" Brennan cut Booth off.
"I need to see the evidence. For the second killer." She said.
"Let's go." Booth said, and helped her down and let her up the stairs, sliding his key card so not to set the alarms off. Brennan looked at the evidence. The hairs and Angela's charts on the blows. The two murderer possibility was likely, she concluded. Booth had to take a call while she was looking at the evidence. He seemed tentative about taking it, but when he looked at the caller ID He excused himself and walked off to take the call.
"Rebecca, This isn't a good time!" He said into the phone.
"You don't even have to pick him up! I'll drop him off where ever you are. Are you at the Jeffersonian?" She just kept going, ignoring what he was saying."
"Yes, but-"
"I'll be there in five, thanks, bye." She said, then hung up. The last thing he wanted to do was bring parker into this, but now he had no choice.
Rebecca dropped Parker off without even getting out of the car, probably to avoid him. Parker ran up and gave his dad a hug while his mom drove away.
"Can I see Dr. Bones daddy? Is she here? I want to see her!"
"She… yes, she is here, but she's hurt, and she is in danger. Okay?" You can see her if she is okay with it though." Booth sighed. Now he was worried about both his son and Bones. It was too awful to think about, so he just walked the small boy into the Jeffersonian taking him strait to Bones's office. He was somewhat surprised to see her in there instead of looking at dead bodies, but not that much. He was even more surprised by what she was doing. She was doing absolutely nothing. It was almost like she was trying to relax. Doesn't Dr. Brennan just work like there's no tomorrow when she wants to get her mind off things?