[DISCLAIMER: I do not own CSI Miami or Criminal Minds or the characters. But I do own the plot and any characters which I have made up]

[AUTHORS NOTE: To unnderstand how this crossover occurs, I would encourage you to read my other two stories

'MR WOLFE' and'PROFILE OF A CRIMINAL MIND'

just to properly understand the new characters and plot]

Quantico, Virginia
Behavioural Analyst Unit

Agent Derek Morgan and Emily Prentiss walked into their office and saw their colleague Dr Spencer Reid sitting at his desk. Morgan and Prentiss smiled at each other as they put down their coffees and walked over to Reid.

"Hey Pretty Boy" Morgan said showing off his dimples. Reid looked up and saw him smiling...
"Have fun last night with Sam?" Prentiss asked raising an eyebrow. Reid started going through papers on his desk, trying to avoid her question.
"Oh look! He's not keeping eye contact!" Prentiss said to Morgan who laughed.
"You two seemed to be getting along well last night Reid..."
He stopped going through his papers and looked up at the 2 agents.
"We're just colleagues Morgan..."
Prentiss and Morgan both turned to each other, with their mouths wide open in surprise.
"We never said anything about you and Sam being more than colleagues Reid, you came up with that all by yourself..."
Reid knew he had stuffed things up and knew Prentiss and Morgan would be on him all the time now about his relationship with Sam the newest member of the BAU.
"Well at least you have a week or so to figure out how you're going to ask her out before she gets back from graduation..." Prentiss said smiling as she walked back to her desk. Reid looked at Morgan who winked back at him. Reid didn't have time to say anything back to Prentiss when JJ, the teams liaison called them into the conference room.

Once they were all seated around the table, JJ started showing them the file for their new case.
"Jane Miller, 24 years old, a sophomore at Jacksonville University in Florida. Found behind a restaurant alley way in Miami. Cause of death was strangulation. She's assumed to be the 7th victim in a series of rapes over the past year and half. All previous attacks were done in public places and in daylight".

The team looked at the deceased photos of the victim, showing that she had also been beaten.
Morgan looked down at his copy of the file and said
"Why didn't they call us in earlier?"
JJ sighed and put her hands on top of the chair as she stood in front of the screen showing the dead girl's body.
"The Miami Dede Police Department only just pieced the attacks together. Three of the attacks were just outside Miami's jurisdiction and they were working girls. The other three were socialites in the heart of Miami – completely different victims."
JJ turned to face the screen again and crossed her arms "But as you can see, the UnSub has escalated to murder. Miami has trouble on their hands."
The team looked at their leader SSA Aaron Hotchner "Wheels up in 20".

Meanwhile half way across the country in Miami, the CSI team were talking in Lieutenant Caines office.

They were all standing around Horatio's desk as he told them the FBI are coming to help with their investigation.
"Why did you call in the FBI H? We can handle this" CSI Ryan Wolfe said with his arms crossed over him in a defensive position.
Calleigh Duquesne straightened up and spoke to her fellow CSI with caution.
"I know this is a sensitive case for you Ryan" she said with her southern accent. "But we're obviously in over our heads and we need help to catch this guy."
Horatio stood in silence as his team bickered between each other. He stood up from his seat and cleared his throat.
"The BAU are a specialised unit in behavioural analyst."
Natalia Boa Vista, the gorgeous Latino then spoke up after her boss.
"They are the best in the FBI; they use their study of human behaviour to help solve cases by making a profile of the killer".

The boys, CSI Ryan Wolfe and Eric Delko looked at each other, still not convinced they needed an outsiders help in their own territory.
Horatio looked at each member of his team and said
"Calleigh is correct, we need all the help we can get".
Ryan looked at Delko, who was shaking his head side to side.
"Like Natalia said, they are the best in their field. This team see's the worst cases in our country. If we want to catch this guy, we need their help. You may not like it, but they do know what they're talking about. We're all on the same team".

The BAU were on their way to sunny Miami and while on the jet they continued talking about the case awaiting them. Reid and JJ were facing Prentiss and Morgan while the two older members David Rossi and Aaron Hotchner were standing next to them.
"Charlie Mills was attacked in a car park behind a cocktail bar after clubbing with her girlfriends. She was walking to her car, grabbed from behind and thrown to the ground. A bystander scared the UnSub off" JJ said showing the team photos of Charlie's injuries. "The victim after Charlie was severely beaten and raped, but the 7th victim as you know was murdered".
JJ passed around the photos of the murdered girl to Prentiss who studied them with Morgan looking on.
"It's a huge escalation going from rape to murder. Obviously something triggered this evolvement in the UnSubs pattern."

Agent David Rossi picked up the photos of the murdered victim, looking at them closely.
"I'm guessing it would have something to do with Charlie Mills attack. He was interrupted and didn't get to finish what he started."
JJ looked up at the older Italian man, and looked back down at the crime scene photos
"Could the UnSub have the known the girl he murdered?"
Morgan shook his head, putting down the photos of the victims on the table in between the agents.
"Unlikely, sexual sadists like our UnSub attack randomly"
Morgan looked at Reid who was eager to speak
"Sexual sadists have to sever a personal connection and see their victims as objects to rape or murder them".
Hotch looked at his team members "Well we know where we have to start. After we meet the MDPD, Morgan and Prentiss will go and talk to Charlie Mills."

JJ started rummaging through the files and sighed, looking back up at the team.
"There's something you guys should know. Charlie Mills, our 5th victim, is dating Ryan Wolfe. He's one of the CSI's on the case".
Emily leant back into her seat, Reid looked up at his superiors and Morgan rubbed his bald forehead.
"Well this should be interesting."

When the BAU arrived at the Crime lab of the Miami Dade Police Department they stood in the lobby area, waiting for Lieutenant Caine.
From inside the glass labs, the CSI's watched on as their red headed leader went to greet their new guests. Once the BAU were lead into the science lab where the CSIs were waiting, they all introduced themselves.
"This is SSA Aaron Hotchner and his team" Horatio said to his CSIs. Hotch nodded to them and then introduced his team
"These are agents Emily Prentiss, David Rossi, Derek Morgan, Jennifer Jareau and Dr Spencer Reid." They all either smiled, nodded or in Reid's case gave the other team a little wave.

The blonde haired southern belle CSI stepped forward with a warm smile
"I'm Calleigh Duquesne and these are CSI Natalia Boa Vista, Eric Delko and Ryan Wolfe"

All of the BAUs eyes were set upon CSI Ryan Wolfe, Charlie Mills boyfriend. There was tension in the air as both teams stared at each other with curiosity. The BAU were studying how the CSIs were acting and they could definitely sense some hostility and angst from the two males, Ryan Wolfe and Eric Delko.

JJ and Emily glanced at each other quickly not knowing what to say next but then Horatio spoke.
"Where would you like to start Agent Hotchner?"
Hotch didn't need to think about his answer and replied straight away
"Some of my agents and I would like to go see the murder scene."

Eric Delko pipped up
"There are photos of the crime scene; we have all the evidence here in the lab. Why do you want to go see the scene then? It's not like he's a serial killer."
Calleigh and Natalia both looked at each other; they couldn't believe how rude Eric had just been. Hotch looked at Rossi and then back to the CSI. Morgan straightened his back and spoke to the darker skinned CSI member
"You think all we do are serial killers? Trust me; we cover the whole spectrum of psychos. We profiled the DC sniper, The Unabomber; we do terrorist, arsonists too. But we need to have a look at the crime scene to have a better understanding of our UnSub". Morgan said crossing his arms and staring at Delko who pursed his lips, trying not to say something back.

Natalia looked confused
"Excuse me, UnSub?"
Morgan rolled his eyes a little, he was getting sick of people always asking them what that meant.
"Unknown subject – the killer" Prentiss answered and Natalia nodded. Horatio looked down at his phone as it rang, he answered it. After a few minutes of silence between the two teams, Horatio hung up and looked at them all.
"He's struck again".
Morgan looked at Delko and said "Well looks like we don't need to go to that last victim's murder scene..."

Once the two teams pulled their cars into park, they all got out and started examining the crime scene. A female in her mid twenties like the others, was in an alley way behind a cinema. Horatio walked over to the CSIs M.E Alexx Woods with Hotch behind him.
"Alexx this is Agent Hotchner from the FBI"
Alexx looked up, nodded and looked back down at the body.
"She was beaten, sexually assaulted and then strangled. No fluids, he must have used a condom, same as the last girl Horatio."

Horatio looked at Hotchner as he took off his sunglasses as David Rossi and Calleigh Duquesne came to join them.
"He's arrogant – strikes in daylight and in well populated places." Rossi said as he looked down at the young lifeless body.
"But he waits for that one girl to fall away from the pack, and he pounces." Reid said as he walked up behind them, giving Calleigh a scare. He said sorry, she simply smiled and said it was alright.
"She might have got some of her attacker while she was fighting him off, I'll see if she has anything under her nails when I take her back".

Meanwhile the other members of the teams were doing their own thing. Natalia, Delko and Wolfe were getting out their kits and cameras, ready to process the crime scene. Morgan and Prentiss were studying the surrounding area and JJ was talking to the police, trying to keep the media out of it.

After the M.E Alexx Woods had taken the deceased's body to the morgue, the CSI's took samples of some foot prints they found in some dirt near the body, took photos of the area and whatever else they could salvage. When they were done, they looked at the BAU.
Emily, Morgan, Rossi, Reid and Hotch were huddled together, studying.
"By the looks of the victim, it was a blitz attack" said Rossi, Emily and Morgan both nodded
"But was it a crime of opportunity or did the UnSub sit and wait?" Emily asked looking around the crime scene.

Morgan, Emily and Natalia went around the back entrance to the cinema while the others stayed near the scene. Natalia watched on as Agent Morgan started looking around the alley way, talking to himself
"What's he doing?" asked Natalia as Morgan started peering around corners as if he was looking for someone.
"He's role playing. He's trying to think like the UnSub, get a sense of him through his behaviour"

Morgan walked back over to the crime scene with Natalia and Emily.
"This profiling really works?" Natalia asked looking around as the police started to fall back to their cars.
"Its a tool" Morgan replied to her as Ryan and Delko joined them.
"So you can tell all about a guy from looking at the crime scene?" Delko said as if he didn't believe it and Morgan slightly laughed
"Well the scenes only part of it. We also use victimology for precedent. Local officers aren't trained to look for the things we look for."
Natalia gave Delko a warning look and turned back to Emily and Morgan.
"Okay so know anything about our guy yet?"
Morgan and Emily looked at each other; Morgan sighed and turned back to her.
"Yeah, he's not going to stop until he's caught".

Once Emily, Morgan, Natalia, Ryan and Delko re joined their teams, they were in the middle of discussing the scene.
"Most UnSubs have specific fantasies, it's as if they're killing the same person over and over again. This man clearly had a preference for young blondes, but now its brunettes." Hotch said looking at Reid.
The CSI's were confused at what SSA Hotchner was getting at.
"What does that mean?" Ryan Wolfe asked impatiently.
Reid cleared his throat and every one's eyes were on him.
"Ted Bundy only killed women who looked like his fiancé, but then he de-volved and he brutally killed a house full of sorority sisters that looked nothing like his previous victims. He went off script. His final victim was a 13 year old girl and when the police found the van that he used to kill her in, the amount of blood revealed that he had lost complete control. It was that de-evolution that eventually lead to his capture"
Morgan looked at the rest of his team, an idea popping into his head.
"He could be de-evolving into a frenzy" .
Natalia looked worried as Calleigh went to speak
"So you mean he's going to mess up?"
Agent Rossi answered her question with worry in his tone.
"If he is on a frenzy there's no telling on how soon he will fall or how many he will kill, so we have to be ready. We need to talk to his last victim before he started killing".

On the way back to the Crime lab, the CSIs were in their hummers talking about the FBI.
"H, are you really just going to let them take over our investigation?" Delko asked from the passenger seat.
Horatio was silent up until they parked the car outside the lab and walked up the steps.
"Eric, let them do their job." Horatio said putting his hands on his hips, watching as the BAU walked towards them.
"I'd like Agent Prentiss and Morgan to talk to Miss Mills" Hotch said to Horatio "The rest of us will stay here and go over the profile". Horatio nodded and looked at Ryan
"Mr Wolfe will take them too Charlies house".
Ryan went to protest but decided not to when he saw Horatios face. Ryan turned towards his car with Prentiss and Morgan following.

As the others were on their way to Charlie's house, the rest of the teams were in the labs. Natalia was going through her database again with the fingerprints they found at the latest crime scene. JJ walked into the lab and Natalia welcomed her with a sweet smile.
"Hi there" Natalia said to JJ who exchanged a smile back at her. Natalia stopped doing what she was doing and faced JJ.
"Did your M.E find anything under the victims nails?"
Natalia nodded
"There was DNA but it wasn't in the system... I'm so sorry about Ryan and Eric, they know that your all trying to help but..."
JJ interrupted her
"But they're boys, don't worry I get it. It happens to us a lot actually, some police departments welcome us whereas others are more hostile."

Ryan pulled the hummer into the driveway of his girlfriend's house. Prentiss was in the seat next to him, while Morgan was sitting in the back – the boys still weren't getting along.
When Ryan had knocked on the door, Charlie had appeared nearly straight away. Compared to the photos Morgan and Prentiss saw of Charlie, she was looking immensely better. Her stitches were out of her lip and the bruises were now starting to fade away. She gently smiled at the FBI agents as they walked into the hallway

"Charlie, these are agents Prentiss and Morgan from the FBI"
She nodded and showed them into her lounge room, where they all sat down in silence. Morgan and Prentiss looked around the room and saw heaps of photos of Charlie with one particular girl, who from the different ages of the photos - showed they had grown up together.
"Sisters?" Emily asked looking at the closest photo to her of the two blondes. Charlie looked at Ryan who was standing near the fireplace with his arms crossed. She looked down at her hands and shook her head.
"That was my best friend Nikki, she was murdered a couple of months ago".
Emily felt bad and apologised whereas Morgan got straight to the point.
"Look Charlie we're here to talk about the man who attacked you. Can you remember anything else from that night?" he said with soothing eyes.
Charlie looked at Ryan for a second and then back to the agents and shook her head.
"This is really important" Morgan said and Ryan moved closer towards him. Morgan got up as Ryan nodded for him to come into the other room.
"If you want to know what happened, read her statement" Ryan whispered angrily so Charlie could not hear.
"We need to hear it from her"
Ryan fits scrunched up and Morgan crossed his arms and breathed in slowly from his nose
"You need to get control. If you can't I will get you taken off the case".

After Ryan had calmed down, they re -joined Prentiss and Charlie who were still sitting on the lounge. Ryan sat down beside her as Morgan continued to talk
"Now Charlie we're going to try something. I want you to close your eyes and go back to that night at the Cocktail bar. You're with your friends... having a drink... chatting...tell me what happens".
Charlie was silence for a few seconds as she played it back in her head.
"Two guys kept buying us drinks...then after we went back to their hotel because my other friends were interested in them... it was getting late so I said I'd better go home.."
"So then you were in the parking lot" Said Morgan
Charlie nodded and grabbed for Ryan's hand, and she started squeezing it.
"I was hit from behind and then all of a sudden I was on the ground... and he was on top of me..." Charlie started swaying back and forth, her eyes clenched shut. Ryan looked at Morgan for him to stop but Morgan put his finger up saying for him to wait.
"Okay Charlie let's just go back to the cocktail bar, is there anything unusual going on?"
Charlie stopped moving and lightly spoke
"Someone's watching me, he's in the corner." And then she woke up and looked at Ryan with tears in her eyes. He put his arm around her as she leant into his chest.
"Thank you Charlie you did well."

Outside Charlie's house, Prentiss and Morgan were waiting for Ryan to say goodbye to Charlie.
"So the UnSub was watching Charlie, waiting for the opportune moment to get her alone."
Ryan approached them, closing his phone.
"Calleigh just rang me; they got a hit off a fingerprint found at the last scene. They want us to meet them at the suspects work"

So off they went to the Miami Warf where a potential suspect was working. Natalia had just arrived a minute before Ryan, Morgan and Prentiss
"The suspects name is Howard Smith; he has a previous assault record".
The two CSIs and two FBI agents walked over to a few working men, displayed their badges and called out for Howard Smith. A man in his late 20s looked up, dropped what he was doing and started running for it.

Morgan and Natalia ran after him, while Ryan and Prentiss ran another way trying to cut off his escape.
After a few minutes of the run, Morgan and Natalia lost him behind some cars, but Ryan and Prentiss were in front of him. He switched sides, running towards a barbed wire fence that lead to the car park. The four of them met up as they all ran towards the suspect and Morgan and Ryan raced against time to catch him before he climbed over.
Morgan grabbed his leg and pulled him down the fence, picking him up off the ground.
"What you running for HUH!" he said and then Ryan pushed him against the fence, patting him down for any weapons.

Ryan, Morgan, Natalia and Prentiss watched on as Horatio, Hotch and Rossi interrogated the suspect. After 15 minutes, Rossi left the room and approached the 4 curious agents.
"He said he found the girl's body, freaked out and didn't call the cops because he thought they'd pin it on him. He claims he has an alibi for all the nights in question, I'll be back in a moment" Rossi nodded to them and walked away.

Prentiss and Morgan looked at each other and started to talk about the suspect.
"He doesn't fit the profile does he?" Emily asked her partner. Morgan shook his head, watching as Horatio and Hotch showed the man out of the interrogation room.
Reid and Delko approached the 4 agents, asking what was going on.
"Where's Horatio taking the suspect?" Delko said looking at Morgan.
"He's not our UnSub" Emily said turning to look at Reid who showed disappointment.

The 3 BAU agents were huddled together where as the CSIs were together also, walking through the labs lobby.
"We're missing something Reid" Morgan said.
"What did you get from Charlie?" he asked.
"She finally remembered that some guy was watching her at the bar, but couldn't describe him. But it was definitely our UnSub".

Ryan was sick of the FBI agents talking amongst themselves, keeping their thoughts. So he stopped the elevator as Reid pushed the button for it to open.
"We need some straight answers from you FBI agents" he said standing infront of the lift. Reid looked to his 2 partners, not knowing what to say. Morgan stepped forward, face to face with Ryan.
"Look Wolfe, I get this is hard for you, being so involved in this. It's your girlfriend..."
Ryan smirked and rolled his eyes
"Yeah it is my girlfriend Derek" he said with a tone "But there are there are other victims also which I haven't forgotten about. H asked you here to get your expertise but so far we have nothing".

Emily and Reid were on either side of Morgan as Delko came to Ryans side with Natalia back a few steps.
"When we have a working Profile, we will tell your team." Morgan said trying to control his anger. Ryan let back a harsh laugh
"A profile? From your human behavioural study?" he said sarcastically
Morgan gritted his teeth but couldn't hold it back anymore, this CSI was making fun of their work.

"HEY! We got called down here to clean up YOUR MESS! Maybe if you CSI's stopped trampling over the crime scenes and making a mess. Stop trying to play cop and let the REAL cops do the investigating"
"Real cops? I'm sorry but last time I checked, evidence is proof not like human behaviour! what is that?"

And that was the last straw, both men swung at each other. Ryan landed the first punch across Morgan's left cheek, he retaliated by charging him into the elevators door. They scuffled around until Eric had pulled them apart, he was holding back Ryan while Prentiss and Reid held back Morgan.
"WE DON'T NEED YOUR HELP! So just go back to DC and let us get on with our investigation" Ryan roared. He pushed Eric off him and walked back to the lab. Natalia stood in silence as the 2 FBI agents let go of Morgan who was staring at Eric.
"Tell your boy, he's too involved in the case. He's jeopardising it." Morgan said with a stern look on his face, walked towards the elevator and hit the button hard.
Natalia shook her head and walked off without saying a word. Eric moved closer to Prentiss and Reid
"We need your Profile agents; before this gets any worst".

Will these two teams be able to put aside their differences to catch the bad guy?

To be continued...

[AUTHORS NOTE: Please review, I'd love to hear what you all thought + any thoughts about whats going to happen?]