This story should not be read by fanfiction-readers under the age of 16, to be on the safe side, you should be older than 18. The following story is very detailled and requires a basic knowledge of science. It goes very much into detail of chemistry and criminalistics.

Furthermore, I would like to say that no TIVA happens in here. However, Tony and Ziva go having a drink at a bar together (in order to later find a body), and if you don't understand that 'having a drink together' does not mean 'having a romantic relationship', you are not old enough to read this story, sorry. But for the rest of you, you are welcome.

You might also notice how much effort I put into this story and it would be nice of you to appreciate this. I also tried to make it most realistic. Any relation to people, living or dead, is purely coincidental and not intended.

Chapter 1

It took me three hours to drive through the city and buy the components that are necessary. Right now, the small bottles are standing on the desk in my basement. It is typical that people like me bride their stuff in the cellar, but I doubt that I am typical for that because usually I do so in a first floor – but not today. First of all, I heat the distilled water in a beaker. To avoid boiling retardation – the effect when vapor bubbles from the bottom of the container rise suddenly to the top and carry away large amounts of water – I use boiling stones, but also glass rod to stir the liquid. While it starts bubbling, I mix the phtalic anhydride and the resorcinol and powder them along with zinc chloride. I melt it until it takes a red color, which became a bit too dark for my test, but it will do the job. I pour some of the sodium hydroxide solution – available in every supermarket, along with most of the other components – to the melted powder and stir it with the glass rod I take from the beaker filled with water. After I filled my 'slurry' into the water, I add enough sodium hydroxide solution until it becomes a constantly green liquid. I boil it again and control my filtering equipment. I add diluted sulfuric acid – also easy to get, although usually less than 1 molar – and I filter the yellow 'liquid' into the same flask. I put the filter cake on a new dish and regard the residue. I sigh and walk over to my preheated table oven and let it dry by 373 K. Tomorrow, it will be ready. I set my alarm clock and walk over to the bag I have already packed in advance. I control everything again, my bottle of hydrochloric acid, my instruments, my gloves and the many other things that I will need.

I turn back to my table where another 'experiment' is running as well. The white precipitation can already be seen at the bottom of the beaker, in which I detained some sodium hydroxide solution to the butyro-1,4-lactone. Saponification sounds so easy in the books but takes its time…

"Where's McGee?" Tony asked when he entered the office and sat down behind his desk.

"Seeing the doc. He called in earlier," Ziva answered and continued writing a report which she should have sent away yesterday already.

"We got a case," Gibbs came in carrying his typical morning coffee and grabbing his jacket and rucksack. The two agents did the same and followed him to the elevator. "Where's McGee?"

"At the medic," Ziva answered. "He wrote you both an SMS and a mail."

"I got a new cell."

"Again?" Tony asked but then became quiet when receiving another slap on the back of his head.

"Body was found at half past eight this morning by the caretaker. This house is unoccupied, like most of the other buildings in this street," the local police officer in charge explained.

"I wonder why," Tony mentioned while he took a look around. He didn't want to live here either. The houses were very old and right at the end of the street was a farm with acres and animals that you could smell up to here. The street itself was in a bad condition and he doubted that any of the few street lamps worked.

"I think he used the seclusion for his insanity," the officer muttered and led the agents inside.

"What do you mean, 'insanity'?" Ziva wanted to know.

"Wait and see." The officer took them upstairs where they could already see the CSU at work, gathering as many evidences as possible.

Tony entered the wooden floor right behind Ziva while his eyes slowly got used to the window as only light source. Hastily, he pulled over shoe covers and put on latex gloves. Inside the room it looked like a huge mess. Local police was walking around, along with the Crime Scene Unit's forensic scientists. That's preservation of evidence, Tony thought and inspected the surroundings.

The body was to be found right in the middle of the wood-paneled room. It was a young woman who he would have guessed in her mid-twenties. She was naked and her clothes lay neatly folded next to her. Around the corpse, a round puddle of blood has been formed which has partly dried into the wood, turning it into a dark brown color.

"Well, I think someone wanted to take the work away from me," Ducky said. Tony turned around, he hadn't heard the pathologist arrive with his assistance. Together, both scientists walked over the dead woman.

"Everyone who does not have a specific task right now: leave the room, please," Gibbs shouted and slowly, the crowd began to dissolve and only left the three NCIS agents, the pathologist and Mr. Palmer, and three forensic scientists at the location.

"Oh dear," Ducky muttered and regarded the body. "Rigor mortis and the body temperature indicate that the body has been dead for longer than seven hours by now. Livoris can be found on the back which means that the poor lady was murdered lying already in this position. Identification by fingerprints will not be very useful as our murderer cut into the fingertips. I propose DNA or dental identification methods."

"Actually I'd like you to comment the cause of death," Gibbs said and looked over Ducky's shoulder. Indeed, the body itself seemed far more interesting than its arrangement. The corpse lay straight, arms right next to the upper part of the body. The chest was cut open with a sharp knife – if not to say scalpel – from each shoulder to the upper mid of the breasts. From there, it formed a Y-cut until beneath the belly button. The triangular parts of the skin were folded to the outside and most tissue of the nervous and muscular system were pushed aside or cut out, setting free a full view on the rips, chest, inner organs and partly even the spinal column. The organs, fully visible as most of the blood has drained out through deep cuts functioning like pipes at the height of the kidney, were mostly disconnected from the veins and arteries. It seemed as if they had been taken out, regarded closely, pressed together and then put back to where they belonged – like taking out several pieces of a puzzle, examining if they were still in a good condition and then placing them back to restore the jigsaw's picture.

"It looks as if someone has tried to perform an autopsy by himself. The most distraught fact is that – due to the huge amount of blood loss – the victim must have been alive at least during the first five to ten minutes beginning with setting the first cut, which would be the Y-shaped one on the upper part of her body," Ducky finally concluded.

"But if she was still alive, why didn't she defend herself, after all, she has had military training," Tony said and pointed at the folded uniform next to the body while he took pictures from every angle of the crime scene.

"This is an interesting question, Tony, just give me a minute to prove my theory," the pathologist said and took a closer look at the body. "Just as I thought," he then muttered. "Do you see this?" he turned to Mr. Palmer and pointed at a tiny dot at the left side right under the chest.

"Injection marks. Do you mean 4-hydroxy butane acid was injected into her body?" Mr. Palmer asked and the pathologist just nodded.

"Of course I'll need Abby to confirm that."

"Can you translate that into English, Duck?" Gibbs asked nerved.

"4-hydroxy butane is a drug usually used in cases including violating and rape. At the autopsy, I will have to do smears of the vagina. Searching the floor for semen would also be helpful," he said with a grim face. Such cases were always tragic and if he wa correct, it also increased the possibility of a serial killer.

"UV-light will be necessary anyway," Ziva suddenly said and turned around. She pointed at the wall. "It looks like something is on this wall."

Gibbs nodded at Tony and he shooed the three forensic scientists down so that one returned with a UV-lamp and black paper to seal the window and darken the room. The agents gathered around the CSU guy and waited until he turned on the device. What they saw was not what they expected. He waved around the lamp but everywhere it seemed the same. The whole room was lightening in bright colors.

"Turn it off," Gibbs ordered and they were covered in darkness again until Ziva found the light switch.

"What the hell was this?" Tony asked surprised.

"We'll know when this was examined," the forensic scientist said and put a probe of the wooden wall into a small flask and did that for each wall and the floor. "But I think that whole room was covered with fluorescence which lights like that under black light. It was probably used to cover up the real blood distributed during the killing process."

"But did the perp paint the whole room with this fluorescence?" Ziva wanted to know.

"I doubt that-" he answered when suddenly the door was opened and the local police officer in command entered with something in a plastic tag.

"We found that downstairs in the bathroom. I thought you might want to have it," he said and handed it over to Gibbs who examined it.

"Seems to be an explosive device. This small plastic bag was torn apart very quickly, forcing its content to splatter in a close area."

"Looks like we got our way of distribution," the scientist mentioned.

"But if he built this thing and left fluorescence all over the room – then he knew exactly what he was doing," Tony said.

"Not only this. A quick test of the sink downstairs marked residues of hydrochloric and some other acids, strong enough to destroy DNA," the police officer added.

"Chlorine in certain compounds is able to destroy DNA sequences, or react with them. I assume that the murderer used this to destroy probable residues of his own DNA on this explosive device and the crime scene itself. Your scientist will have to search for alcohol on the device itself, which can wipe away DNA and makes identification of our perp impossible. But even with these evidences, it doesn't have to be necessary that our murderer is an expert of forensics. Things like that can already be found in the internet," the CSU scientist explained.

"But still, it takes some fantasy to perform an autopsy on a living body and make UV-lamps unusable by distributing fluorescence all over the crime scene," the officer said.

"I'd be very interested in how he got fluorescence. Buying it in large quantities is obtrusive," Gibbs said.

"Perhaps he produced it himself, in smaller amounts, but over a long time. A scene like this has to be planned by long-hand, he probably knew exactly what to do this evening," Ziva spoke out loudly what they all thought.

"And I doubt that this will be the last crime scene looking like this," Gibbs muttered and looked at the mess in the room.

Still, reviews would be nice.