The mornings within New York City were nothing short of busy. Anyone that worked nights was finally going home and anyone who started in the mornings was just getting themselves to work. The New York Crime Lab had several employees working for them but they all had different shifts. Some only had to work 6-8 hour shifts and others worked 18 hours shifts. Anyone that worked directly with Mac Taylor was on an 18 hour shift and that now included his youngest team member. Rivka Bayar was only 18 and had graduated all her programs young. She graduated high school at age 11 and had just finished her bachelor's for Criminology that summer which gave her a large educational background with the lab. Mac had asked for favors and constantly had Rivka tested in Forensic Science. He knew she was from Israel and her family prided themselves on education which clearly showed with her. But he also wanted to help this form of new blood be ready for what was going to come in the real world.

Mac had went home with Jo the night prior since he agreed to get a decent night's rest but he knew Rivka was still in the lab that night when he left, so he was hoping she had managed to leave. As he and Jo walked in, they saw 4 folders and they all had Rivka's signature on some documents. "So much for her going home and getting some rest," Jo mused thoughtfully. Mac nodded and followed Jo deeper into the lab to see Rivka there and she was waiting on a sample. "Rivka?" She glanced to see them and smiled. "Thought you were to go home and get some shut eye."

"I got a few hours on the couch," she answered and Mac chuckled at that. The techs that worked 18 hours had all put some money in on a couch they could crash on if they were waiting for samples and were exhausted. That did include Rivka and clearly she took advantage of it.

"Are we any closer on our Jane Doe?"

"Waiting for GCMS to finish and the centrifuge to separate a sample. Sid gave me stomach contents and asked for specific parts to be analyzed. I have the one part in the GCMS as it was a crystalline substance," she began before it finally beeped and she glared at it as she took out the sample. "We have charcoal in the sample. Though why it was in the victim's stomach I can't be sure."

"Activated Charcoal is the only thing I can see winding up in the victim's stomach if you're getting a hit of charcoal," Mac explained looking at the sample she had and she glanced at him. "It's a common medical practice that when someone has activated charcoal in them it's usually due to poisoning of some kind. So our victim may have had an excessive amount of alcohol or drugs in their system."

"This isn't something just anyone could do though correct?" He shook his head and she smirked. "Hopefully toxicology came back on Jane Doe and if it did, I can narrow down the hospitals in the area with patients that came in for treatment," she responded.

"I'd ask Sid how long he thinks that charcoal would have been there," Mac answered and she put a thumb up as she walked down to the morgue. He had to chuckle as he looked at her results. "Out of all the people that applied from her cohort, I picked her. I'm wondering if I was a little too rash."

"You weren't. She didn't want to just be knowledgeable in Forensics. She wanted to know about Forensic Science and be in the police force which widens her range. Meaning she can do more if we're down a man on either side," Jo reminded him.

Mac chuckled and then saw Adam walk in. "She didn't go home did she?" Mac shook his head and he chuckled at that. "I swear that kid is going to be the death of this lab in a way. Good at everything we have here, but also someone who won't go and get her rest."

"Tonight she'll be going home. I already have plans of that," Jo promised. Adam shuddered at that thought and she chuckled. "Think cleanly would you? The kid is working her hardest She needs a break," she responded and Adam chuckled. "You're her age range. Aren't you off tomorrow?"

"Don't get me involved."

"Be fair Adam, she listens to you," Mac chuckled honestly. "The rest of us? We're all so much higher than her on the food chain she's a mindless soldier to us. She'll jump however high we ask her to," Mac explained and he chuckled at that. "She's down in autopsy now so when she comes up try talking with her."

"Talking with Sid and Hawkes?"

"She wants to get a link."

Meanwhile down in autopsy, Sid was shocked to see Rivka. "Rivka," he greeted in surprise and she smiled at him. "Did that stomach sample help?" She nodded and then revealed her GCMS results of charcoal and he looked confused. "Charcoal?"

"Mac said he believes the only reason there would be charcoal in the victim's stomach is if it's activated charcoal. Medically it's used to deal with extreme poisoning from drugs, alcohol or otherwise. Does toxicology have anything for me yet?"

"Actually yes," Hawkes answered walking over and handing her the report. "Hot off the press," he teased as she read it over and smirked pointing to the results.

"High levels of ethanol and cocaine or rather a tropane alkoid stimulant," she read. Hawkes looked at her impressed and she chuckled at that. "I may not have been in med school Hawkes, but I do keep up with some of the basics," she chuckled.

"Good. So your victim was high and drunk. Probably excessively as these levels are still high but if the GCMS spat out charcoal and Mac's saying the only charcoal that was in the victim's stomach that makes sense is activated charcoal," Hawkes answered.

"The charcoal also seems to have partially disappeared due to how the levels are high but not dangerously high. So I'd predict the victim died about 3 hours after getting the charcoal into her stomach," Sid informed her and she nodded.

"I'll check local hospital records for anyone with our Jane Doe's face and a report of intoxication on the night of the murder," she informed and Hawkes grabbed her arm as she was about to leave and handed her the GCMS results. "Knew my load was too light."

"Go home tonight."

"Knowing me, the bosses will be on my case the minute I get up there again," she chuckled and Hawkes had to laugh at that. Meanwhile as she was walking up she saw Flack. "Morning Don." He chuckled at her as she walked into her lab and saw the centrifuge was done and she checked the results and frowned. "Plastic?"

"I wouldn't say plastic. The centrifuge can't tell you the exact composition but if we're right about the charcoal it would have been in a dissolvable capsule," Mac answered walking in and she looked at him. "How long did Sid predict?"

"He says he thinks the charcoal was in there for 3 hours as some of it seemed to have disappeared as the results are high just not dangerously high," she informed handing over toxicology. She then opened up her computer and began putting in search parameters. "I want to have extremely detailed results. I don't want a single thing escaping with this killer. Sid said 3 hours after she had the charcoal ingestion she died."

"So she could have went anywhere."

"Yeah that's what I don't like. Searching all hospital records in one hospital is a pain as it is. Searching the ... 20 or some other hospitals in the state? That'll be even worse," she responded as she began the search. "That'll take a few hours at least," she responded.

"Then you can afford to go with Mac to his office, lay on his couch and get a few more hours sleep," Jo answered and she glared at her. "It's either that or you're not on call tomorrow," Jo warned and she glared at the woman. "You know as much as you hate me you love me."

"Tell me that after I deal with you when I get up," she advised and Mac chuckled leading the girl away from Jo.

"Do your parents know how long you work?" She shook her head and as she yawned he chuckled. "You should probably give them an idea of the long hours you pull 5 days and most time 6 days a week," Mac warned her.

"They wouldn't care," she answered as she curled up on the pullout couch and fell asleep pretty quickly. Mac decided that while he was watching over his youngest charge, he'd keep an eye on her parents and what they did for a living.

As he was getting results, he saw Flack and Danny come in and they were about to get right into it until they saw Rivka sleeping. "Did she not go home last night?" Mac shook his head at Danny and he sighed. "Hate to wake the sleeping beauty but we need her." Mac nodded and shook Rivka's shoulder which made her eyes flash open. "Sorry to wake you as I hear you didn't go home, but we have a new dead body and we need all hands on deck."

"I'm up," she promised as she stood and helped pick up the couch pieces. "Let me just go get changed as outside is freezing compared to the lab," she answered and Danny nodded and everyone watched as less than 5 minutes later she was back out with them and had her kit, gun and badge.

"You do not know how to leave work behind do you?"

"Not in my family nature," she responded to Jo as they went to get their cars and head to the scene. Mac and Jo always took Rivka as she did have her license but she wasn't ready to drive the Avalanche which is what Mac wanted her in.

Arriving, they walked over and as they were about to say something, Rivka glanced at the message on the victim's body. "It's carved into them, but I can't make out some of the letters. Blood is messing with the message," she sighed.

"It's not in English."

"Hebrew," Rivka answered looking at Jo. "Someone who speaks Hebrew is behind this but that doesn't help much either. The states are ethnically diverse," she responded. She then glanced back behind her and pursed her lips. "The towers," she whispered.

"What is it?" Jo hadn't clicked into what she was thinking.

"Mac what's today?"

"May 2," Mac answered just as confused as Jo now. "What's the significance?"

"May 2, 2015. 4 years since the downfall of Al-Qaeda's leader Osama Bin Laden," she responded and pointed to the towers. "The ones who destroyed the towers. Their leader is dead. It's not too far from the towers. I don't think this was a random kill anymore."

"No?"

"Hebrew language, a connection to the towers," she began and Mac realized. "This kill is to send a message. Though without the message being clear, I couldn't tell you to whom," she answered.

"So when Sid is finished in autopsy, do you want me to get you down there?" Hawkes had joined them on scene. She nodded at him and he chuckled. "I guess we're lucky you were raised in your native tongue as well." She nodded at him and then her phone began ringing.

"Answer it," Mac pleaded as it kept going. She grabbed it annoyed and as she answered she heard it and glanced around confused.

"How do you know that?" She slipped her gun out of it's holster and Mac and Jo did the same knowing she felt a threat if she did it. "Look I don't know anything about it and I don't plan to make any comments on it," she responded. As she hung up she glanced at Mac. "I was right. This is going to get real sticky and real fast."

"Why's that?"

"I think the message has narrowed down. But I can't comment until I know for fact."

"So before Sid begins opening him up Sheldon, once the body is clean get Detective Bayar down there," Mac informed and he nodded at them as he left with the body. As the doors closed, and the car left, Rivka began with her imaging again. "Rivka what's happening?"

"I think you'll learn real quick when we get back to autopsy. I won't do anything alone."

"Meaning you know someone who might be involved."

"Sadly," she answered.