Disclaimer: See chapter 01.

Thank you to everyone who is reading this story. I have a lot of it already planned out and yes there will be long and short chapters as it's really the only way to go with this one. Any questions just ask.

Cassadee Willows – Thank you again. We're getting there, but you already know that :)

Chapter 03

One week later

Quantico, VA
Behavioural Analysis Unit.

SSA's Morgan and Hunter

Derek looked at Sarah, he was still trying process everything that had been said. Why Sarah had said what she said had confused him. He didn't know much about her other than what he had read in her file – the file that Hotch had asked him to look at when he had been trying to find a new team member. An order that Section Chief Director Erin Strauss had given him, without telling him why.

Derek and Sarah walked in silence until they reached one of the black FBI SUV's that they would take to get to the crime-scene. Sarah looked at Derek contemplating on just how much information she should give him considering that she knew what he was going to ask.

"Now what did you want to ask me?" Sarah questioned, as Derek unlocked the SUV for them to both climb in.

"How old where you when you met Reid?" Derek questioned, he had seen the look on the younger FBI agent's face when Sarah had first walked into the bullpen only weeks earlier to meet with Aaron for the first time.

"I was a child, well a teenager. But what does that have to do with the case?" Sarah answered as they climbed into the SUV. "Also how did you know that I knew Spencer?"

"Not a damn thing. I was just curious, also it was the way he looked at you almost as though he had seen a ghost. But what I do want to know is what makes you so sure that you know how this unsub thinks?" Derek started the car and reversed out of the car park before driving out and onto the road. He also turned the heat up so that the car would be warm enough for them.

"When I said I was on the original case I didn't mean as an officer of the law," she paused glancing at him before she continued to speak. "I was a child, just after my parents split up...I was staying with my father I was six years old. I remember hiding under the bed where I couldn't be seen,"

"You hid under the bed?" Derek raised an eyebrow that was something one of the children had said to them.

"Yes. I hid under the bed where I couldn't be seen. I saw his face and everything he did to my father. My older brother wasn't home that day he was at his friends house. I remember thinking that if he was home he would have been able to save daddy. The man got away, cause I wasn't brave enough to move...my brother came home late that night and I was still under the bed. I'd fallen asleep crying." Sarah took a deep breath before before she looked out the window and stopped speaking.

"Is that why you're on this case? Because you think the unsub is the one that killed your father?" Derek questioned as he continued to drive to the detectives' house.

"Is there a way to answer that so that you won't bite my head off," she replied, not really wanting to answer the question."I don't think he is, I'm sure it is,"

"How are you sure? You haven't even looked at the crime scene yet." Derek paused running a hand over his head before they pulled up outside the house where the Detective had been killed. "I mean, I know that you've looked at the photo's and the reports,"

"I just have this gut feeling. And somebody once told me that I should always follow my gut," Sarah told him as she looked towards the house, something was eerily familiar about it. When she looked at the house closer she noticed a couple of small things that hadn't been written in the report that couldn't have been picked up on.

Derek looked at her as she walked towards the house and then stopped and walked to the garden and stopped again. He quickly walked up to her and stopped to look where she was looking.

"Did anybody check the roof?"

Quantico, VA
Behavioural Analysis Unit.
Back in the bullpen Spencer was trying to think of why the girl was so familiar to him. Hotch knew what the young man was thinking but didn't think that he had any right to say anything.

"Can I see her file again?" Spencer asked Hotch as he stood up to leave the room.

"In a minute you may," Hotch answered, as he received a phone call from Derek telling him that Sarah had just picked up on something that none of them had picked up on. "Agent Hunter said something about the roof,"

"What do you mean the roof?" David queried with a raised eyebrow as he looked around the room and noticed that Spencer had sat back down again. "They said nothing about it in the reports,"

"And we didn't think to check there," Emily added, before realising that the little girl had said something that no one quite knew what she meant. "Didn't the little girl say something about him looking down on them?"

"She did, but we thought that she meant that he was taller than them," Hotch said as Spencer looked over the notes from the interview with the children to see if he could figure out what they had meant.

Fredricksburg, VA
Crime Scene - Detective's house.
Sarah motioned to the roof, along the lines of the gutter. Noting that parts of it had been bent as though someone had climbed up to sit upon the roof.

"I know that this is going to seem like an odd thing to say, but what if the unsub had used the roof as a way to gain access into the house?" Sarah told him, before she pointed out what she had seen from her experience being a CSI. "Most law enforcement agencies don't think to check for the roof as being a point of access, I've found fingerprints in the strangest places. And from what I heard about the Detective from others was that he was a man who prided himself in the way his house looked on the outside. Notice how there's no ladder marks in the grass?" she paused motioning to the grass below them, before pointing back up to the gutter. "The gutter tells a different story. Walk down the side of the house and tell me if there's anything unusual that you didn't pick up on before,"

"Are you sure about this?" Derek questioned and then thought better of it as he looked on the ground and up at the gutter line. "There's some more indentations on this side,"

Before Sarah and Derek knew it the rest of the team had joined them, curious to know what it was that was so special about Sarah. Hotch and JJ stood back watching the scene unfolding before them. Sarah showing the others the indentations in the gutter line and telling him what they meant.

"How do you know what it means?" Spencer questioned, he was sure there had to be another explanation for the indentations other than the one she was about to give them.

"In the report it said that the little girl said that the man was looking down at them, what if she meant that he was literally looking down on them." Sarah took a deep breath before she continued to speak. "You know that this isn't the first time that he's killed here. Also by me saying that I was on the original case I didn't just mean as a CSI."

"Sarah?" Spencer questioned as something clicked inside his brain.

*Flash back *
Sarah and Spencer sat eating their lunch together under an old oak tree outside of Sarah's bedroom. They had decided that it had the best place to eat and study without distractions.

"Spence...can I tell you something and you have to promise not to tell anyone," Sarah asked looking at the geeky boy sitting opposite her.

"What is it? You know you can tell me anything," Spencer replied a slight smile on his face which quickly faded when he saw the distant look she had gotten.

"You know how my father's dead?" Spencer nodded waiting for her to continue. "I was six years old, hiding under the bed when it happened. He told me to do it, not my father but the man that did it."

"Where was your brother?"

"He was with his friends...when he came home the only thing he saw was blood in our fathers bedroom. The next thing was me under the bed. But before anything he called the police," Sarah spoke quietly and quickly as she looked at the older boy who was taking very word in. "What else was I to do?"

*end flashback*

Spencer blinked as he realised she was the same girl he had met all those years ago. In his eyes she had changed, in her eyes he had changed. But they were still the same on the inside.

"This is the house I lived in when I was little, the house that co-incidentally my father was killed in," she paused shutting her eyes for a split second and then opening them again. "Can you show me where the father where killed?"

"I will," Spencer said before Derek added that he would go with them, as he still wanted to see what she was going to see that they hadn't seen. They may have been the best in their field but there was some things that the BAU couldn't pick up.

"Good," Sarah smiled, before she followed the two of them inside, stopping briefly when she saw that what was once the front bedroom was a living area.

"The parents bedroom is up the back," Derek said, pointing towards the back of the house.

"Question, how would he have looked down on them?"

"The house has a sky-light," pointing upwards before she spoke again. "In the old houses, like this one - they were very rare and didn't have tinting on them. If you look up you can see the birds flying overhead. I'm assuming that the little girl meant that she saw him looking through the light,"

"We need someone to fingerprint the sky-light," Derek told Emily who had followed them in but stayed back a little bit. "Emily?"

"I'm on it,"

Emily dialled the bureau and asked from them to send a forensics team to process everything that Sarah pointed out to them.