"My Allyson?" Lauren's father sounded genuinely confused as Nick explained the evidence to him.

"Mr. Weston, we found that your daughter was arrested in 98 for violent behaviour. Can you explain that?" asked Grissom as he handed the man his daughter's record.

It was Lauren's mother who, after a sigh, answered "She was going through a tough time. She'd gotten pregnant and the SOB asked her to marry him…"

Here, Mr. Weston took over "We'd always thought he was worthless, but Allyson loved him and he made her happy. Until…"

"At the rehearsal dinner, Allyson walked in on Carl and Lauren in the linen closet."

"We, of course were happy she was leaving him. She, however fell into a dreadful depression and had a miscarriage. That's when she became violent. She attacked a pregnant woman in the streets and we had committed to a psychiatric clinic." Concluded Mr. Weston taking a sip of water.

"So this is revenge?" Asked Nick looking from his in-laws to Grissom who was lost in though.

All of a sudden, it hit him. It's Allyson he thought and without a word, stood up and rushed to the lab to get one of the ultrasound images.

When he got back, he had already confirmed his fears. He'd taken the time to check that the print Sara had collected from the ultrasound was a match to the ones on the window, and therefore a match to Allyson Weston.

Opening the door, Grissom called Nick to join him in the hall way. "Nick…" He said handing him the prints of what he'd found "…It's Allyson. She's the…"

"The serial Killer…" Said Nick nodding as he read the sheet "…we have to find them Grissom. I can't handle being in those father's places." He sounded desperate and Grissom had to sympathise.

Nodding Grissom replied "I know Nick. We have to save them." Suddenly they were joined by Catherine "…Nick, go inside, try to find anything helpful from the parents. When you have something, I'll be in my office." Without another word, he walked into his office and closed the door behind him.

Once the supervisor was gone, Catherine turned back to Nick expecting him to be going into the interrogation room as Grissom had instructed. Instead, she found him lost somewhere in his mind.

"Nick…" He looked up at her "You going in?" She asked as he continued to look lost.

"I don't get it…" He said, now looking at her "Why Sara?"

Catherine sighed "Nick…" She said looking around to check if they were alone "don't go spreading this round…but, Sara's pregnant."

Nick spun so that he was now facing her completely.

"She's what?!" He was sure he hadn't heard properly.

Catherine sighed again and nodded, "Almost five months…"

"But…I didn't even know she was seeing someone…well, I guess now it make sense…the baggy shirts…mood swings…how did I miss it?"

"We all did, Nick." Catherine said with another sigh "And no one knew she was seeing someone."

Nick's face turned from confused to curious and he tilted his head slightly looking at Catherine "who?"

She looked around again to check if they were still alone then nodded towards Grissom's office.

Nick couldn't believe it "Grissom?!"

"Sh, Nick! Yes. Now, go do what you were told so we can save yours and Grissom's family." Without another word, Catherine walked into the lab where Warrick was processing evidence and seconds later, Nick went into the interrogation room.

Resting for the first time since Sara had gone missing, Grissom felt all the worries he'd been holding back flood his mind. He felt lost without her. He missed knowing she was only a phone call away. He felt guilty about not telling her how happy he was about the baby. He felt she knew, but he'd never said it and now he couldn't help thinking it might be too late.

It was about 15 minutes later that Nick walked into the office as he'd been told to.

"So?" asked Grissom as he sat up in his chair.

Nick sat down on the one opposite him "Well, the parents say Allyson and Carl were going to but an apartment in Vegas. They can't think of anywhere else she'd have taken them. They only remember three addresses. Two in Henderson, the other in the center."

Grissom barely had time to nod before Catherine walked in holding her cell phone.

"I had a hunch…" She held up her cell phone "Allyson's phone is on. We can trace the call." She smiled as the two men sprang out of their seats and practically ran into the lab. Second's later, she joined them.

Sara was feeling sacred now. Damn Hormones she thought as she held back tears.

Lauren was lying on the sheet-less bed in pain. She knew if she didn't get to the hospital soon, she0d die. The doctor had told her as much two months earlier.

As she sat ready to give in to crying, Sara heard a noise. She wasn't quite sure what it was but it was coming from the bag Allyson had left behind. Standing up, she limped over as Lauren watched. Reaching in the bag, she felt something vibrate against her fingers and pulled it out; a cell phone.

"Looks like she didn't think of everything." Whispered Sara as she checked the caller ID.

Grissom had been put in charge of the calls while Nick and Catherine traced the call. Warrick joined them reading the DNA report Greg had made of the blood at the scene. The knowledge that the blood was Sara's made each ring compress the team's hearts.

It was only on the fifth ring that someone answered. Signalling with his free hand for Catherine to start tracing the call, Grissom spoke "Allyson?"

Sara had recognized the number as a CSI. With her heart pounding in her chest, she answered it praying that the voice on the other line would be Grissom's; it was.

"Griss?" She didn her best to keep her voice down knowing that if Allyson didn't know what she was doing, she could keep the line on long enough for her friends to trace the call.

She's alive he thought, smiling at her voice.

"Sara, honey, are you alright?" Grissom noticed both shock and relief on his team mates faces.

"I'm fine, Griss…oh, the blood…small injury on my foot…Listen. Lauren needs help. She's not well." As she said this, she looked towards Lauren who was in tears on the bed.

"Ok, Sara. Do you know where you are?" He asked as he looked at the map on the screen.

The truth was she didn't know where she was. She'd been too busy in the car trying to stop her foot bleeding to pay attention to the rout.

"No, I don't…Grissom…Gil…Listen to me. What ever you do, when you get here, do not let Nick in the house! She'll kill him…" She wanted to tell him more, but she was cut off by the door unlocking and Allyson walking in.

"What the?!" She looked furiously at Sara and the phone "Bitch!"