A/N: I'm back! Get used to it hehe. Exams are almost over, just have one practical exam to go. So, less studying, more writing! Thank you all for the kind reviews, I'm really glad you guys are enjoying this story!

Greg's eyes grew a size as he spoke, "You mean the cute chick that Brass was all worked up about?"

"Don't you think she is a little bit young for you Greg?" Nick chuckled.

"Plus, she is Sara's sister," Catherine added, making two jaws hit the floor.

"No way," Nick said when he managed to pick his jaw up from the floor. "Our suspect is Sara's sister?"

"I guess cuteness runs in the family then," Greg joked.

"Listen Greg, this is not funny," Catherine said in her mother tone. She put her hands on her sides to stress to Greg that this was no time for jokes.

"Sorry," Greg replied as he bagged the knife he had just found. "I'll get this to the lab and test it for prints.

"Where did you find it exactly Greg?" Catherine asked. She couldn't believe she had overlooked it the first time.

"It was hidden under this shoe box. I didn't see it at first, but the tip of the knife was sticking out slightly and reflected the light of my flashlight," Greg said as he held the shoe box up; the bottom was covered in blood.

"I bet that's Dana's," Nick mumbled.

"Get it to the lab and run it ASAP," Catherine said before turning towards Nick.

"Nick, you come with me," Catherine wanted to check out Emily's room. She truly hoped Emily wasn't the one who had killed Dana; not only for the younger woman's sake, but also for Sara's.

"Where are we going?" the Texan asked Catherine.

"We are going to check out Emily's room. We didn't have a reason to go there before, but we do now," Catherine answered.

"So how did you find out that she is Sara's sister?" Nick asked carefully.

"She told us; well it was more that we had to pull it out of her. She lied about her name at first... hell she hardly told us anything," Catherine said.

"Ah, now Brass' reaction makes sense." Nick said, following Catherine off the campus. "Erm Cath, where are we going?" Nick asked while looking around. He was sure they were leaving campus.

"Emily doesn't live on campus; she was pestered until she left campus." Catherine replied.

"Ouch," was all Nick could reply. He couldn't imagine what it must have been like for Emily.

The residence Emily lived in with several other students was called "Greek house". Gold coloured metal letters were mounted to a piece of wood on wall, but one very funny guy unscrewed the R. Now the sign on the house said "Geek house".

Nick chuckled as he saw it. It was immensely funny, even though it wasn't really funny. He could understand that the people living in this house didn't appreciate the joke very much.

As they entered the building, they almost bumped into a young man. He was carrying a big overnight bag which fell on the floor as he bumped into Catherine. The young man clenched one of the handles in his hand which caused the fabric of the bag to tear. Women's clothing fell out, making Nick raise his eyebrow.

"Going to a drag show are we?" Catherine asked the boy who had turned red as a tomato. "What's your name?"

"Paul, Paul Johnson. I am just taking my girlfriend's clothes to the Laundromat, she is away for a while," he said.

Catherine didn't think it was possible but the young man turned even redder than he already was.

"Who is your girlfriend?" Nick asked. He didn't believe one word of the story. Who would take folded clothing to a Laundromat?

"Emily" the young man answered; he wanted to continue but his voice broke. "Erm Sidle," He said. His voice was so soft that both Nick and Catherine had to pay extra attention.

"Nick, stay here with him. I'm going to make a phone call," Catherine said as she walked outside.

She had to confirm what the young man said. She didn't believe a word of it.

"Sidle."

"Hey baby, it's me." Catherine said unconsciously. When she heard herself speak she gasped. Did she really say that?

"Hey, what's up?" Sara replied with a low, almost flirty tone. She couldn't believe Catherine had called her baby, but it sounded good. The most beautiful woman in the world called her baby!

"Can you ask Emily if she has a boyfriend?" Catherine asked.

"Erm, what is this about?" Sara asked, finding the question rather strange.

"You know what, just give me Emily on the phone please."

Sara looked at Emily who had been staring at her during the phone call as if she was trying to read her mind.

"It's Catherine, she wants to talk to you," Sara said while handing Emily the phone.

"Miss Willows?" Emily said into the phone, wondering why the hell this woman wanted to talk to her.

"Hey Emily, please call me Catherine," Catherine replied. "I wanted to ask you something."

"Ok," was all Emily replied.

'Just as talkative as her sister' Catherine thought to herself. "Do you have a boyfriend?"

"NO," Emily's voice was filled with surprise. Catherine realized she sounded just like Lindsey when she asked her daughter if she had a boyfriend at school.

"Ok, thank you," Catherine said.

"Wait, Miss–Catherine, why do you want to know?" Emily asked, hoping Catherine wouldn't hang up.

"We just bumped into a young man who claims to be your boyfriend," Catherine told Emily.

"Really?" Emily was surprised. Who would do such a thing?

"I will talk to you about this later Emily, I have to go now. Tell Sara I said hi ok?" Catherine said, wanting to wrap up the conversation.

"Ok, I will. Bye." Emily gave the phone to Sara. "Catherine says hi."

Sara was rather disappointed that Catherine hung up already. Or was it that she was disappointed because she missed Catherine's voice?

After calling Brass, Catherine walked back inside. This Paul Johnson guy was weird, walking around with Emily's clothes.

"Paul, we would like to talk to you," Catherine said.

"Why?" Paul asked.

"Because you just lied to us," Catherine replied.

Nick raised his eyebrow and looked at Catherine.

"Paul here is not Emily's boyfriend, I just checked," Catherine explained to him.

At that moment Paul threw the bag at Catherine and ran off. Nick caught up with him fast enough, silently thanking himself for staying in shape.

"You are coming with us big guy," Nick said as he saw Brass pull up near the building.

"I'm not saying anything," Paul said as Nick led him to Brass' car.

Sara was curled up on one corner of the couch as she sipped on her coffee. Instead of watching the movie, she was observing Emily who was sitting in the same position but on the other side of the couch. Emily was looking at the screen, but Sara doubted if her sister had seen even a tiny bit of the movie. Sara wondered what was going on in Emily's head. What was she thinking about? Did she know who killed her friend? Sara got the strong feeling that Emily knew more than she was letting out.

Just when she wanted to ask Emily about it, her younger sister got up and stretched herself.

"I guess it's time for me to go home," she said, not looking at her sister.

Sara groaned inwardly. She really wanted to talk to her sister. She wanted to know more than Catherine and Brass did. She got up to turn off the TV and get ready to take Emily home.

"No Sara, don't bother. I'll walk," Emily said as she brought her glass to the kitchen.

"No you're not," Sara said. "I'm taking you home."

"I can take care of myself, Sara" Emily said. She walked up to Sara and stood in front of her sister.

"I don't wanna hear it, Emily. You are not walking," Sara said, raising her voice. She wanted Emily to know there was no arguing possible about this.

Emily brushed past Sara and got her coat. "Like I said, I can take care of myself. I have done so for ages, so why change that now?"

"Because you can" By now tears were welling up in Sara's eyes. "For years I thought I was alone in this, for years I hoped there would be someone in this world who would understand. I gave up that hope a long time ago, and then you showed up. I don't want you to feel like that, you are NOT alone," Sara's voice broke as she said the last sentence. "For years I have been crying myself to sleep. I have been playing a role for the rest of the world. I do NOT want you to go through that" Sara almost shouted at Emily, tears of anger running over her cheeks.

Emily just stood there, staring at Sara. She didn't see this coming, and she didn't know how to react.

Sara put on her coat and wiped away the tears in her face. "Just let me take care of you. I don't want to mother you, but I am your sister, and I want to look out for you"

Emily opened the door of the apartment. "You can do that in your own time, Sara. I don't feel like being taken care of right now" And with that she left, leaving a flabbergasted Sara behind.

As Emily walked down the stairs of Sara's apartment building, she felt tears well up in her eyes. She regretted falling out with Sara like that. She couldn't quite figure out why she fell out like she did. She wanted Sara to take care of her, right? So what was the fucking problem?

As she exited the building, she saw Sara standing there, leaning against her truck. Somehow her sister had beat her to it and managed to get downstairs before her.

"There is no running away from me, Emily Sidle," Sara said with a smile.

Emily smiled between her tears and walked towards Sara. The look in her eyes said it all; she was sorry, and Sara knew it.

No words were exchanged, the looks said it all. Emily got in the car, and Sara drove off.

Catherine was sitting in the break room, sipping on her coffee. Brass and Nick were talking to Paul, and Catherine decided to take a break. She had been pulling a double, and her body was giving signs of exhaustion.

She had been comparing the knife to the pictures Doc Robbins made of the wounds on Dana's back. They were a match, and therefore they had found a murder weapon. They had the what and where, now she only had to find out the who and why.

Greg came walking into the break room. As he caught Catherine's eye he smiled.

"I say blood, you say..." he said.

"Greg, I'm not in the mood for games," Catherine replied.

"The blood on the knife is from two donors," Greg said, handing Catherine the results.

"Both female?" Catherine said with surprise.

"Yup." Greg looked around to see if the coast was clear before he leaned closer to Catherine.

"One of the donors is Dana," he sat down next to Catherine and sighed. "I was so free to run the DNA through AFIS. I didn't get a hit, but I did get this," he said as he handed Catherine another paper. "Seven alleles in common with our lovely colleague."

Catherine looked up at Greg. "I think we need to make a phone call," she said pulling out her phone and pressing the speed dial.

"Sidle"

"Is Emily with you?" Catherine asked, not bothering to say hi this time. She was a woman with a mission.

"Erm yes, why?" Sara wondered why Catherine was so interested in Emily today.

"Bring her in," Catherine said.

"Why?"

"We found her blood on the murder weapon," Catherine said, knowing this would upset Sara.

Sara looked over at Emily who was looking at her expectantly.

"We have to go to the Lab, but before we do, you are going to talk to me," Sara said with a harsh tone. She was growing tired of being left in the dark.