Disclaimer: Unfortunately CSI:Miami and it's characters are not mine, they belong to the big guys with the money in the States, I'm just a poor Dutch girl needing this to express my way too big imatination :p

Spoilers: Season 3 and 4 basically :p

Author's Note: This is my first attempt on a Miami fic, don't kill me if I get stuff wrong :p

Like two drops of water

Chapter 1: Aimee

Horatio sat in his office, it was one of the few times he was actually there. Since Calleigh decided to stop working at ballistics they needed a new person to take her job. It was a quiet night so he decided to look for a suitable person. He was flipping through some applications when his eye fell on a name that looked very familiar, too familiar.

He looked at the resume, it looked impressive. This young woman graduated college a year early, passed university with a high degree in both chemistry and physics and studying in Spain now. In the short e-mail that came with the application she stated that she would come back to Miami in case she got the job. Horatio was most impressed by the specialty, ballistics. It is not often that women specialize in that, he was lucky enough to know the best 'bullet girl' of the United States. According to her resume, this girl would be the second best.

Horatio sighed, there was one big thing that held him back from immediately hiring the woman. He decided to page Calleigh to ask her for advice. He would normally never do that, but it was the name that made him page her.

Calleigh Duquesne had switched from the ballistics lab to the 'normal' lab because her ex-boyfriend John Hagen committed suicide in her lab. She couldn't stand working in the lab knowing he had died in there. She just got out of another argument with Ryan Wolfe, which seemed to be the order of the day. She hated the way how Ryan was going out with that reporter girl, and how he always gave out information with her. No she didn't hate it, it disgusted her. The young man thought he could take Speed's place in the team, but Calleigh was going to show him wrong. He would have to earn her respect, and it would take a hell of a long time before her respect for Wolfe would even grow to be close to the respect she had for Tim Speedle.

It amazed Calleigh every time how much Ryan worked on her nerves. Every time she told him about her findings, he knew something better. She hated know-it-alls like him. While she was on her daily rant about Wolfe she also added Delko in it. She wondered what her long time friend was up to. Eric Delko was a great guy, but something was wrong with him, he seemed less focused and she noticed weird things. She was sure he was taking drugs, which worried her. She wanted to help him with it, but she also didn't want to stick her nose in his business. She was absorbed in her thoughts when she was woken up by the sound of her beeper.

She wondered what Horatio needed her for. She got up from her chair and strolled towards his office. She was walking in the hallway towards Horatio's office when Delko called her. He wanted Calleigh to double check something he found. She decided Horatio could wait for a bit. While she was helping Delko, her beeper went off again, twice.

Delko smiled "You're popular" he said giving her the time to check her beeper.

"It's Horatio, I was on my way to meet him when you called me. I guess it's more important than I thought" Calleigh said with that cute smile of hers.

"You are excused" Delko replied to Calleigh's semi-excuse. How could he refuse that smile anyway?

With a smile on her face Calleigh left Delko to his work. He was a great guy, a great colleague. After what happened with John, she decided she was never going to have a boyfriend again who was in the same line of job. It was just too risky.

When she opened the door to Horatio's office, she still wondered what he wanted to see her for. The look in his eyes showed he was serious, she wondered what on earth could be so serious. Would it be her dad?

"Calleigh, sit down please" Horatio said to the blonde woman who was standing in front of him. He could see she was nervous, it took a very good eye to see Calleigh Duquesne out of composure. To the outer world she always was a professional, she never seemed to show her feelings. But Horatio could see it, because he knew where to look.

Calleigh sat down and looked at her supervisor. She hoped he would get over with it fast, whatever it was.

"I was looking through the applications for your position at the ballistics lab" Horatio started, folding his hands, resting them on the desk in front of him.

"Yes?" the blonde replied.

"Are you still sticking with your decision?" Horatio asked her.

"Yes" she stated firmly. She was sure of her decision, she could never work in that lab again knowing a person she cared for died there. She would never let anyone she cared about anywhere near that lab.

"Well, when I was looking through the applications, I found this one" The red headed supervisor pushed the file towards Calleigh.

Calleigh took a look at it. The resume was quite familiar, and the personal page with picture made Calleigh's heart skip a couple of beats. She pushed the file back to Horatio.

"No way" she snapped at her supervisor "No way, not her"

"But Calleigh, after you, she is the best in the field" Horatio sighed "I can't decline her application."

Calleigh sighed "No way Horatio".

"If you want to change my mind you are going to have to use something other than no way" Horatio leaned on his desk, waiting for Calleigh to come up with a good argument.

"She is much safer in Spain, I don't want another person I care about…." Calleigh started, but Horatio interrupted her.

"First of all, she is specialized in ballistics and second of all, if you care so much about her, why didn't you mention her to me?" Horatio said, while he was wondering why Calleigh never mentioned anything about it.

Calleigh sighed and again she looked at the application form. Aimee Hayes, 09/12/80, that was her little sister alright. She felt tears well up in her eyes.

Horatio sighed, he put his hand on Calleigh's to support her.

"Talk to me" he said, hoping she would tell him what the problem was.

"She is my little sister" Calleigh sighed "I don't want her here. She is safe where she is"

"I am going to have to hire her Calleigh, I can't justify turning the best down because of personal reasons of one of my CSI's, I'm sorry".

Calleigh didn't say anything and got up. "If you weren't going to listen to me anyway, why did you ask me in here?" she said. Horatio could hear the pain in the woman's voice.

"I promise you Calleigh, nothing will happen to her ok? I will watch out for her" he said. If Horatio Caine promised something, he would do it, especially if it came to protecting people.

Horatio's promise assured her a little, but she was still weary of having her little sister around at work. She didn't like what Horatio did, if he wasn't going to listen to her anyway, why invite her and ask for her opinion.

She had to clear her head. After all that had happened, after all these years, she didn't know if she could face her little sister, leave alone the fact that it would be on daily basis at work. She knew Aimee was good with guns too, but her sister had built a reputation in the world of ballistics that even she couldn't ignore. Even though that older sister happened to be Calleigh Duquesne, America's own bullet girl.

Calleigh totally forgot about checking back on Delko, or anything she was supposed to be doing that day. At the end of the day, after driving around in Miami, she had missed 4 calls, all from Horatio. She also had a couple of text messages on her phone, one from Wolfe asking where she was and one from Delko saying that Horatio was looking for her. But she wasn't going back to work this night. She needed to prepare for seeing Aimee again.

There weren't many things Calleigh failed in her life. But she had always felt she had failed her little sister by not taking enough care of her. And now Calleigh Duquesne was scared of facing her own sister again.

Horatio figured Calleigh wasn't going to answer his calls or come back to work. He didn't really understand why Calleigh was so upset about having her sister work at the lab. He understood she was upset about what had happened with her ex-boyfriend, but her sister seemed to be very aware of the effects of guns. It must be something else, there must be another reason. And Horatio was going to find out.

With one click he send the e-mail. After making a few calls he decided to notify Aimee Hayes that she was accepted and that she should call him ASAP to make an appointment. Less than 5 minutes after he send the e-mail to Aimee, his phone rang.

"Hello Mister Caine, this is Aimee Hayes, you asked me to call you" the voice on the other side of the line said. Horatio smiled to himself, yep this was definitely Calleigh's sister.

"Hello Miss Hayes. That was fast" Horatio replied.

"Yes, I was still working online Sir, I am currently working at the university's student office because I already finished my courses" Aimee eagerly replied.

"I would like to inform you that you have the job. Do you know you will be replacing your sister in the ballistics lab?"

Horatio heard a deep sigh on the other side of the line.

"Yes, I am aware of that Sir. Does that mean she quit her job?"

"No, she is transferred to another lab in our department. And you can call me Horatio"

"Ok, Sir..erm Horatio. May I ask why my sister stopped working at the ballistics lab?" Aimee asked.

Horatio wondered why Aimee didn't know that. Obviously the two sisters were not in contact with each other.

"You are going to have to ask her that yourself. I was just wondering when you can start Miss Hayes"

"You can call me Aimee, Miss Hayes makes me feel so old" she grinned.

"Aimee, when you can start" Horatio asked again. It was obvious Calleigh's sister was younger, and more talkative.

"I already booked a flight. I will be arriving in Miami in 2 days. Erm Si..Horatio, is it possible that the lab can arrange an apartment for me? I haven't been in Miami in a while and I sort of don't have contacts anymore." Aimee started to rant.

"I think you can call your sister about that Aimee. She might be able to help you out" Horatio heard the hesitation. When Aimee didn't reply he smiled to himself, it was like he was talking to Calleigh. The young woman knew it was best to not argue with that, and she just took a breath and swallowed it, just like Horatio had seen her older sister do lots of times.

"Thank you Horatio. I will see you in 2 days" Aimee said. She hoped her new boss wouldn't notice that she lost her composure for a second.

Horatio hung up the phone with a smile. Two sisters in one lab, that was going to be one hell of a ride. He decided to put out a memo for tomorrow, he wanted to tell everyone at the same time he found a new person for the ballistics lab.

Calleigh sat in her car, staring at the ocean. She didn't hear her phone ringing the first few times, but an annoying noise like that was hard to ignore.

"Duquesne" she answered.

"Hey" said the voice on the other side.

Calleigh's heart seemed to stop beating when she heard her sister's voice. She did not know what to say.

"Calleigh, are you there?" Aimee tried again.