Gil Grissom loves experiments. He loves reading about them, creating them, and most of all, doing them. He likes the idea of not knowing what will happen. Everyone knows that Gil Grissom is not a very spontaneous man, heck, even he knows it, but doing experiments is his way of feeling uncontrived. Well, if Grissom knew what the results of his most recent experiment were going to be like, he would never have even started.

It all began when he and his girlfriend slash co-worker, Sara Sidle, found a mystery blue, paste like substance at a robbery scene. The paste was found beside a broken window. The glass in the window wasn't broken; it was just the wooden window frame that was warped. The burglar or burglars must have pried the window open with something and entered the house that way as no other windows were disturbed and there were no signs of forced entry at any of the doors. Grissom and Sara both pondered if the blue substance might have aided the perpetrators in getting the window open.

After all the evidence was collected from the scene, Grissom gave Sara the task of going door to door with Captain Jim Brass and Detective Sophia Curtis, to interview residents to see if they saw anything suspicious. Now, since Grissom and Sara have been together for a little over two years, Sara believes that she knows her man pretty well and could predict what he would do in most situations, which is why she didn't even have to guess what he was going to do while she was gone.

"Just don't blow the lab up hun," Sara said in a tone that reminded Grissom of his mother.

"I promise I won't, mom," he replied smirking at her.

Sara knew better than to start one of their lengthy discussions about her mothering tendencies at a crime scene, so she just rolled her eyes at him and walked away.

Grissom had a smile on his face as she walked away. Not only had he found someone to love in life (which no one ever thought would never happen by the way), but he was going to get to plan and execute an experiment! It felt like Christmas for Grissom.

When he got back to the lab, he immediately started the investigative process. He noted the qualitative aspects of the substance: the blue colour, the paste like texture, the slightly acidic smell, and of course, the taste. Grissom noted that it tasted similar to the sour milk he tested in his last experiment. He also took the quantitative results, which showed the blue goop had a pH of 4 and contained lipids and proteins.

Satisfied with his analysis so far, Grissom decided he wanted to know if the blue stuff was flammable, so he went to get the blow torch and put it under the fume hood with the blue paste. He quickly turned on the blow torch and closed the fume hood. For the next few minutes Grissom watched the blow torch char the paste. As the paste burned, it gave off a blue smoke. This intrigued Grissom greatly and instead of grabbing a mask to protect himself from the fumes, he just went ahead and opened the fume hood, causing him to breathe in the blue smoke. The blue smoke smelled awful like rotten eggs. Grissom had to close his eyes as the smoke burned his eyes and a dull pain coursed through his nostrils and head. When he opened his eyes a few seconds later, everything was hazy and Grissom felt like the world was becoming dark. Within the next minute Grissom was in a heap on the floor unconscious. It was in this moment though, that his subconscious kicked into overdrive.