"I've got it," Hodgins said, putting his hands into his lab coat front pockets. "The substance holding the bones together is cyanoacrylate, commonly known as super glue."

"Good work, Dr. Hodgins," Brennan complimented him. "So, how do we remove it?"

"Nitromethane is most effective solvent for super glue."

"How do we get some?" Wendell asked.

"It's used as fuel in drag racing, so it shouldn't be too hard to get."

"Anything that isn't a type of rocket fuel?" Cam asked, returning to the lab. She didn't want Hodgins anywhere near something explosive in the lab. He could get in enough trouble as it was.

"Acetone works, too." Hodgins replied, clearly disappointed that he couldn't get his hands on the nitromethane. He had some plans and experiments to run with it.

"Great, some nail polish remover," Cam ordered.

"I should have a basic profile by tomorrow," Sweets told Booth, attempting to break the silence. "It won't have specific details to look at, but can help you focus on what to look for."

They drove mostly in silence. Booth was thinking about what happened to the Andersons. Daughter on the run after a family fight. He hated these kinds of cases. Family squabbles always affected him. He had his own personal family problems that he didn't like to deal with.

Sweets wasn't too comfortable with it, either. His own experiences in foster care had shaped him into the person he was today. But every case like this was like picking a scab off and it revealed old wounds.

"I can't believe they let her walk out," Booth finally admitted his rage at the situation. "How can you just let your daughter leave? Especially when you know she has a mental disorder?

Sweets looked over to see Booth's knuckles turning white from the death grip he had on the steering wheel. He had to diffuse the situation as best he could.

"Every parent wants what's best for the child. They'd like to think they know what's best. For the Andersons, they just wanted Lisa to be healthy. The best option is still lithium. It is the drug that all others are measured against. The side effects aren't great, but it works. The others aren't as effective. Some people can't take the feeling of being numb that sometimes comes with it. They feel life is better dealing with the ups and downs then being leveled out. It's a very difficult thing to judge. If her parents felt that was best for her, they would want her to continue the medication."

"They should have never let her leave," Booth said. "Once she's out in the world, all kinds of bad things can happen."

"She needed a better support system for sure," Sweets agreed.

"Family doesn't turn their back on each other. They look out for each other."

"There should be consequences for actions. So should they look out of each other like you did for Jared or like you do for Parker? How is he by the way?"

"Fine," Booth answered, a little surprised about how the conversation turned. "He seems to be doing alright. Rebecca seems to have a steady boyfriend for now. Parker likes that. He keeps asking when I'm going to get a girlfriend."

"What do you tell him?"

"I'm pretty good on my own."

Sweets didn't believe him.

The nail polish remover helped to dissolve the super glue. Once the bones were free, Brennan picked up the hand and looked at the inside part.

"This would explain the anomalies," Brennan said, smiling having figured out the most puzzling aspect of the crime. "It appears our murderer has cut the hands from the male victims and glued them to the females and vice versa. The killer was trying to make identification impossible. I would hypothesize the killer did the same with the teeth."

Her smile faded when she looked at the wrist bone. There was a pattern of curves on the inside. The lines were evenly spaced throughout the length of the bone.

"What do you make of this, Wendell?" Brennan asked.

Wendell looked at the bone. The pattern was intriguing. He knew what it was, but it didn't make any sense.

"It looks like the swirl a smooth blade would produce after being freshly sharpened," he said. "The blade will get duller with each cut and once the starting point of the blade came around, the cut would be a little less smooth, creating this circular pattern."

"But a smooth blade cannot cut through bone," Brennan reminded Wendell. "Only a serrated one can."

"I know, but that is the pattern. It's the only thing it can be."

"Clearly it's not the only thing."

While the little argument was going on, Hodgins was looking at the acetone on the examination table. Inside of the clear liquid where some very fine, dark particles. He quickly put on some gloves and got a beaker. He pushed the liquid into the beaker.

"This could be huge," Hodgins said to himself, but everyone turned to see what he meant. "If I could figure out what these particles, I could narrow down a location of where the super glue was used."

While everyone continued working, Brennan went to Angela's room to see her progress on facial reconstructions. The way the case was going, her facial reconstructions were needed more than ever. With no fingerprints and the teeth all mixed up, they could not use dental records, her faces were the best ways to identify the victims.

"How are things going, Angela?" Brennan asked.

"It's tougher than usual," Angela admitted. "Not being able to use the teeth affects the look of the mouth. Trying to pin point exactly what it looks like involves more number crunching than I'd like."

Brennan stood by Angela, watching her shade the face, making slight changes. It always fascinated Brennan how Angela worked. The artistry that made up of a face is extraordinary. A little more shade or a little less changed the face so much. It was a skill Brennan wished she could have.

"I think the death of Mr. Nigel Murray has affected me more than usual," Brennan admitted. "I think the fact he was murdered at the Jeffersonian has something to do with it. I find it so hard to come home to an empty apartment. How do you deal with it?"

"Sweetie," Angela said, pulling Brennan into a hug. "It's been difficult on all of us. I've been lucky to have Hodgins with me. He's been so great at just making feel safe. He's there when I need him, whether it's just to talk, hold me, or have some incredible sex."

"I normally can get through this on my own. Why is this one so different?"

"Sometimes you can't make it on your own."

Booth pulled into his parking spot at the Hoover Building. Sweets and Booth got out of the SUV and headed towards the elevator.

"We all need someone to fall back on," Sweets told him. "No man is an island. Remember that."