Warrick, Nick, and Greg now knew what the matter was. They paced around outside to look for evidence. "The Denali they took is still here," Grissom said. "Okay…" he looked around some more and he then spotted something on the sidewalk. He kneeled down and picked it up carefully with tweezers. "…Leather…looks like part of a shoe," he said putting it in a bindle. "Catherine was wearing heels, right?" Nick said to Warrick. "Yeah, I remember now, she was." "Okay, this could possibly be the last place they were before they were kidnapped," Grissom said standing up. "Hey!" Greg said motioning for them to come over to him.

"Tire treads," he said pointing to them. Nick took pictures of them. "Okay…they end about six inches east…" Warrick said looking at them. "So, guys were in a hurry, and it looks like they went east."

It was dark. Catherine sat up with a throbbing pain in her head. She moved to rub her head, but she found that her arms and legs were tied tightly behind her. She looked around, and as soon as her eyes got used to the dark, she noticed another figure lying next to her. "Sara?" she said trying to move closer to her. "Sara?" she said again. The figure lying next to her made a move.

"Agh…jeez, where are we?" Sara said sitting up. "I don't know, it's too dark to tell, and I don't hear any on-coming traffic," Catherine told her. Sara's wrists and ankles were burning from the ropes tied around them. "Let's just hope Grissom and the rest come soon."

Grissom was in the lab, looking at the piece of leather from the shoe they had found. "Mr. Grissom, there's a package for you at the front desk," came the voice of the secretary and he followed her. He saw the package and it clearly said, "GUESS WHO?" in big font. He took it wearing his gloves and set it down in his office. Inside, was a paper. He read it.

"Time is running out. If you don't find them soon, we will kill them, and believe me when I say we will not be merciful."

Grissom crumbled up the paper slightly as he read it and slammed it fist against the wall. Warrick and the rest came in to see what made the ruckus.

Sara moved around to try to get in a more comfortable position. "These ropes are killing me," Sara said to Catherine. "Good, then perhaps we won't have to," came a voice in front of them. The lights flickered on. They looked around to see that they were in an old run-down building, in what seemed to be in the middle of nowhere. "Tell us why you're doing this," Catherine said looking up at the four figures.

"Well, you see, when Tony was in jail he spotted us and told us he had a deal. When we left, he said he was breaking out of jail that night. He said he'd make sure we each got $500,000 if he didn't succeed in killing that brunette over there," one of them said pointing to Sara. "And that it would be our payment for finishing the job." "Why do you have Catherine too?" Sara said, confused. "Because he told us he hates women like you two," another said. Sara gave Catherine a look and they turned and walked out of sight, turning off the lights.

Grissom dusted the note for prints and got four unknown prints. He ran them through AFIS. He actually got a hit. "Gregory…Thompson?" he said reading the name. "Arrested for…drug dealing, sentence to five years," he said as he continued to read. "Released three days ago." He stood up and walked out. He jumped into his Denali after phoning Brass and headed for his address.

When Grissom and Brass got there, accompanied by other officers, they ran to the front door. "Las Vegas police! Open up!" Brass said outside the door. He nodded and another officer kicked down the door. They looked inside the building. It was empty.

"DAMMIT!" Grissom yelled angrily as he saw another note.

"Hello, Mr. Grissom. Having trouble finding us? Well, we're somewhere out of sight in the city, but we are in Las Vegas. Follow the notes."

Grissom sighed as he read it. He walked out and headed back to the lab.

Sara and Catherine were still in the dark. From outside the room, the four figures were talking to one another. "Okay, I think we gave him the message," one of them said smiling as they watched Grissom drive away. They kicked the door where Sara and Catherine were and held up two syringes. They injected both into Sara and Catherine and first nothing happened, but then they felt a horrible pain in their chests and stomachs. "That's enough for now," they said and walked out, leaving them in the dark with unbearable pain.