Here is the next chappie. Enjoy :p

2 years later

(Since about a year ago, Carla started working for the FBI as a profiler, she and JJ shared an office.)

JJ sat at her desk sifting through case files, trying to determine which case the team should take. She had boiled it down to two

Serial killer in Pittsburg Pennsylvania. Killed 6 children and 4 parents so far

Murderer in Washington DC. Killed 2 people so far. Left 1 survivor Simon Warsaw.

She looked at each case about a million times, number 1 was obviously a high priority case, but something about number 2 didn't feel right to her. The fact that he left a survivor signalled that he either felt remorse, was incredibly sloppy or was interrupted. She picked up one case file and walked to the briefing room. The team were already sat round the desk, waiting for her. She looked at each member of the team before starting.

"Amber and Michael Carson were found dead 2 nights ago in their home along with their 2 6 year old daughters Molly and Gemma. These were the first in a string of murders centered around families in Pittsburg. The other families were the Williams family, found the same way and the Hutchins family found in their home also. As of yet the Police have no suspects and no leads so they called us. The families are all 2 parent families with 2 children all under the age of 10."

"Have the police found a connection between the cases?" Reid asked from the back of the room

"The only commonalities are the way the bodies were positioned. The parents were face down on the ground, the Mom on the left, the Dad on the right and the two children were in between them face up, oldest on the right, youngest on the left. Other that that there were no similarities between the murders. The method of death was different in each case, but he does seem to be evolving"

"How?" Hotch asked intrigued at her use of the word. Ever since Reid got kidnapped she had worked so hard to become a 'real' member of the team. Her knowledge of profiling was just as good as the profilers themselves.

"The first set of murders was pretty simple. Single shot to the head, close range, no other signs of injury. The second set of murders was a little bit more advanced. Knife to the heart, obvious signs of defensive wounds on the father's hands and various cuts and bruises on both the children and the mom meaning that he beat them before killing them. Finally the last set of murders was gruesome. He tortured them using various household appliances meaning that he is getting more confident. The cause of death was a broken neck, but what is very different about this last one is that the father was killed first. TOD was at least 3 hours before the rest of the family. The father was first, the 2 children were next and then the mother was last"

"I think I've heard enough" Rossi said sanding up, Hotch followed suit

"Wheels up in 30" he said before leaving the room.

The team were just about to leave when Erin Strauss appeared behind them. Agent Hotchner, Agent Jareau can I see you in my office please. Carla knew that she was speaking about JJ and followed the rest of the team to the jet.

In Strauss' office

"As you probably knew Agent Jareau, myself and Agent Hotchner have been assessing your progress and your relevancy to the team, and after careful consideration we have decided that you should be promoted. Agent Jareau you have now been promoted to Supervisory Special Agent Jareau, Profiler and Media liaison of the FBI"

JJ looked shocked. Her mouth moved but no sounds came out. She simply handed over her Special Agent badge and received her new badge. With pride she placed it on her hip and stood up tall

"Thank you ma'am" she said extending her hand. Erin took it and the two blondes shook before JJ and Hotch left the room to join the others. When they reached the jet, the others were all staring at them, curious as to why they were called to Strauss' office.

"I got promoted" JJ said smiling. Everyone, bar Rossi, jumped up and hugged her in turn

"So how does it feel to be An SSA?" Emily asked

"The same as an SA" JJ replied causing laughter to erupt from within the plane. Within the short space of 5 minutes the excitement died down, and professionalness set in. everyone was seated at a table looking at various pieces of the case, trying to figure out a profile of the killer or killers.

After a very long flight, the plane touched down on Pennsylvanian soil. JJ and Carla's home. They exited the plane where they were greeted by the local police. JJ walked up to he one officer which looked to be the head of the operation.

"Hi, I'm Jennifer Jareau, we spoke on the phone" she said to him

"I'm Detective Bearson, thanks for taking this case. Because of these murders the whole town has gone into a state of panic. Families are refusing to leave their homes, teachers don't want to go to school in case someone tries to kill the children. It's chaos"

"We'll do everything that we can sir, I promise" JJ said as they all followed him to the police station.

After 2 gruelling weeks, the team had come up with a square total of nothing.

JJ and Carla drove in silence towards their hotel, until a thought struck both sisters at the same time

"What if the murderer is a cop!" they both said at the same time.

"That would explain why the murders stopped when we arrived"

"It would also explain why there hasn't been any evidence left at the scenes."

"Sounds about right" JJ said. They drove towards their hotel intent on telling Hotch what they came up with. They were only a few blocks from their hotel when JJ noticed flashing lights in her rear view mirror. She pulled over to the side of the road and turned off the engine. The police car pulled up behind them and 2 officers got out. 1 walked to Carla's side and one moved to JJ's side.

"Is there a problem officer?" JJ asked, curious as to what she had done. She wasn't speeding so it couldn't have been that.

"I'm going to have to ask you to step out of the vehicle please" one officer said

"Can I ask you what we did wrong" Carla said. The officers just glared at her

"We don't want to make a scene, please just step out of the vehicle" JJ's officer said, he sounded annoyed and agitated.

"Not until you tell me what I did wrong" JJ said, her hand was in her pocket subtly dialling Hotch's number.

"Don't make me shoot you" the officer said, he had lost his cool now. Hotch picked his phone up just before the officer had said this.

"We're FBI, I suggest you go back to your car now" JJ said, she was clearly angered now. Both she and Carla pulled their guns as the officer pulled theirs. No one pulled their trigger yet. They glared at each other.

"Go back to your vehicle now before I am forced to shoot you" JJ said. Both of the officers trigger fingers were quivering. The sound of sirens was heard in the distance.

"Drop the guns" Morgan's voice came behind Carla's officer. Both officers were startled, their trigger fingers contracted and 2 gunshots rang out. Both JJ and Carla gasped. 2 more shots rang out. The officers ran to their car and sped off. Morgan pulled up to the car expecting the worst. JJ was basically unscathed, her only injury was a cut on her right forearm where the bullet had grazed it. Carla was crying, her right hand was pressed tightly on her left shoulder, blood was seeping through at an alarming rate. JJ's hands were on top of hers trying to slow the blood flow. Morgan the door open and within a matter of seconds Carla was lying on the pavement, JJ was to her right holding her shoulder, Morgan was on her right holding her hand.

"You ok there Carla?" He asked her, she nodded her head. The sirens were getting closer.

"Those officers" she said shivering, it wasn't particularly cold, but shock was beginning to set in "They were the ones who murdered these people"

"How did you know that?" He asked her

"We figured it was police officers who were committing these murders, that's the reason why the murders stopped as soon as we got here and why there was no evidence left at the scenes" JJ said looking at Morgan. Behind him she saw Emily and Hotch appear with their guns drawn. 2 EMT's were behind them. They rushed to Carla's side and within minutes she was being rushed to the hospital.

A few hours later Carla and JJ walked wearily into their hotel room. Carla's left arm was in a sling, the only indication other than the hole and than pain that something had happened. As soon as her head hit the pillow Carla was fast asleep. JJ looked at her "At least one good thing came out of this ordeal" she thought. They now knew who the killers were, and the extra 2 gunshots earlier were Carla and JJ shooting back. The killers were injured now, and it will only be a matter of time before they have to seek medical attention, and when that happens, the team will be there ready to catch them. JJ too fell fast asleep at the thought of catching these murderers. It wasn't an eventful sleep though for JJ knew that serial killers don't stop until their target of targets were dead. And their targets, or so it seemed, were herself and Carla.