Ok here goes with the introduction.

This is a story involving M/Preg, you have been warned so if you don't like don't read.

I don't own any of the characters, not even Greg and this work is purely fictional.

I have not experienced the condition discussed in this story so any details are gathered from the internet or friends.

Please feel free to criticise or review this story, I have been working on it for a while and have tried to edit it into a readable format. Any jumps in the text are to prevent dragging of the storyline and possibly a clue to the question at the end. I have tried to mark these with page breaks and new chapters so as not to cause too much confusion.

Hope you enjoy the story.

The impossible just happened.

"Hey look at this" Greg pushed his magazine across the table towards his friend.

"What is it?" Nick asked looking up from his own sports journal.

"They just found the gene that causes diabetes" the newly qualified CSI tried to read his friend's expression as he looked at the scientific blurb on the page.

"Well it's interesting but I don't really see the significance" Nick sighed, he liked Greg a lot but sometimes he found himself struggling to understand his brainy colleague.

"It's just you know, another break through for science. Think about it, a hundred years ago x-rays were still a new thing, the guy developing them lost most of his fingers to radiation because it wasn't understood. Now we virtually use them every day to check parcels or look at things in the human body. They even use them on paintings from I dunno 1500 to see if they are truly from that period of if the artist was reusing a canvas." Nick shrugged, what was his pal getting at "Fifty years ago no-one had even heard of DNA, think how much harder our job would be without all that scientific discovery. I guess I just thought since you're a scientist you'd be interested!" Greg retrieved the article back and turned the page.

"Listen, I never said I wasn't interested, it's just DNA and genetics is your thing. You start talking about it and I understand like one word in twenty. I don't really see how knowing that a certain gene determines diabetes is a breakthrough" Nick quickly tried to save the situation developing. Greg was a geek, he loved science in any form and while Nick enjoyed the day to day challenges that finding evidence and putting away criminals provided, science was not his whole life.

"I guess it's not really a breakthrough in the sense that it will do something but if they can find the gene for diabetes then maybe they can find the one that causes cystic fibrosis or haemophilia or other nasty genetic diseases. I suppose also that we could eventually use the same technology to narrow down a list of suspects. One day we might find say a hair on the victim and be able to identify it as that of a white male, with diabetes who is likely to be between 5ft 4 and 5ft 6 who is genetically prone to being overweight" Nick laughed at the idea and Greg smiled back.

"Ok now you're going into the realms of fantasy. What's next? A man having a baby?" the Texan chortled happily. Greg pulled a face; as if that would ever happen.

"Ok you two, we got a case. I need all hands on deck to help collect the evidence" Grissom quickly handed the two friends the pieces of paper which told them where to go and exited towards the car park.

"Guess that's lunch break over then" Greg muttered eating the last of his sandwich and dumping the plate in the sink for later.

"You love it really" Nick grinned, the ex-technician had worked so hard to become a CSI, there was no way he wasn't excited about his first major case.

Despite the early hour, the sun was already hot and arriving at the designated area Nick and Greg both removed their sweaters before slipping into the protective vests that were a must for field agents. Warrick Brown held up his hand in greeting to the latest recruits "Grissom got you two working as well huh?" he smiled, his sun glasses making him seem more relaxed than he actually was, this was a nasty case and he desperately wanted to get the bastard that could commit such a crime.

"Alright break up the old wives club and get to work, Nick you're over there; Greg I need you to photograph and bag anything you can find over near Jim and the 4th victim …" Catherine Willows quickly gave orders to the newest investigators on scene. Today she was gonna be all about business. This one they had to get right.

With smiles the three men wandered to their respective areas and began the familiar search for evidence, anything that may be of use had to be photographed and gathered for analysis. Greg carefully scanned the floor at his feet, it was littered with shell casings, at least 20 rounds; this would take some documenting. Placing markers he took as many pictures as he could, making sure to get several angles that would aid location later on in court.

He was busy collecting the casings up when the shot was fired, a quiet whistling noise that did not seem out of place in the hustle of the crime scene, the only thing the bottle blonde was suddenly aware of was a stinging sensation in his side and a warm trickle of blood underneath his bullet-proof vest "Yaouch!" he shouted loudly in surprise almost as much as pain and collapsed to floor, everyone looked up from their tasks wondering what was going on, after all it wasn't the first time that any of them had been attacked on scene.

It took only seconds for the team to realise that something was up with Greg and they ran towards him with worried expressions "What happened?" Grissom pushed to the front of the gathered policemen and CSI's.