As Nick and I walked into the DNA lab to see what Greg had come up with, the energetic lab tech grinned at us curiously. "What do you have for us, Greggo?" I really wanted to know what he had learned from CODIS.

Greg chuckled and shook his head. "First I need a little information."

I glanced at Nick wondering if we'd forgotten to give Greg some key item so he could process the sample through CODIS. I was certain we hadn't and Nick shrugged his shoulders at me. As I looked at Nick for that brief moment in the well lit lab, panic surged through me. Nick had a smudge of my lipstick on the edge of his mouth.

He registered the panic that flashed across my face and raised his eyebrow at me with a look that showed he was wondering what the hell the problem was.

Always the one to state the obvious, Greg helped Nick fill in the details. "So, I see you two must have been working on a transfer experiment while you were out running errands." Greg's expression was a little too eager.

Nick wasn't picking up on my not so subtle glances and gave Greg a look akin to accusing him of smoking crack. "I'm not following you, man."

Under my breath I hissed at him, smacking him on the thigh. "Shut up, Nick."

He glanced at me, still not getting it. He was cute, but at times, he could be rather dim, especially it seemed when he was suffering from residual hormone overload.

Greg was utterly amused at the scenario before him. "You know. Transfer. From her to you." He gestured a little too dramatically from me to Nick. "I assume that's why you've got Sara's lipstick on your mouth." Greg looked smug.

Nick reached up and touched his lips as I cleared my throat and glanced at him out of the corner of my eye. Nick didn't say a word, but looked slightly embarrassed as he continued to try and rub the remainder of the lipstick off.

Greg seemed to be enjoying his discovery of our secret. "So, how long has this been going on?" I could tell he wasn't going to stop until he got some answers.

I glanced at Nick and I couldn't help but chuckle softly. "Uh, Nick?" He glanced at me quizzically as I reached up and wiped the rest of the lipstick off of his mouth. "You missed some."

A sheepish expression crossed Nick's face as he finally realized there was no way we were going to be able to talk ourselves out of this one.

Greg smirked. "That wasn't interference on the line earlier was it?" He knew he had us, and he knew we knew he had us.

I think a faint blush started to creep into my cheeks and a bit of panic hit Nick as he tried to reason with Greg. "Now, Greg, no one else has to know about this."

Greg raised his eyebrows and his expression spoke of bribery. "I don't know, I mean if Grissom caught wind that two of his CSIs were getting jiggy with it during company time."

I decided to try and get some control of the situation, and take advantage of Greg's crush on me and try and reason with him. I'd flirt if I had to. "Greg, Nick and I weren't getting jiggy with it. First of all, we were on a break; second of all, what we do outside of the office isn't anyone else's business." I glanced at Nick who just indicated from his expression that I was doing a hell of a lot better than he was at trying to explain the situation.

Greg deadpanned and raised a single eyebrow. "Don't try and tell me that you and Nicky boy here weren't making out. I know a kiss when I hear one."

I could feel my lips curling up in a smile and my cheeks flushing with color. I glanced at Nick, hoping he'd throw me a life ring.

Nick cleared his throat. "Ok, I'm not going to deny that we were involved in a little transfer experiment as you put it, and that what you overheard could be construed as a kiss, but if you tell anyone, Sanders, you're a dead man."

Greg grinned. "Secrets will cost you."

I let out an audible groan and glanced at Nick. "You make is it sound like we're sneaking around. Do you really care if anyone knows?"

Nick looked at me and chuckled. "No, but this wasn't exactly how I'd envisioned telling everyone that we were dating and I do think the man has a point about making out on company time."

I rolled my eyes. "And how many double shifts have we pulled lately?"

"Now, Sar." Nick raised his eyebrow at me and flashed me one of those charming smiles that makes me melt.

I giggled. "Ok, fine." It occurred to me that the reason we were in the DNA lab in the first place was not to be interrogated by Greg, but to find out what CODIS had come up with. I turned to Greg and narrowed my gaze. "Greg, you called us, remember? What did you find out?"

Greg was suddenly all business, but I knew that this conversation was far from over. "Uh, ok, sample A, the baby, is here. CODIS came up with this. I ran it three times just to be sure. There are seven elials in common with each of them; I think you've found the baby's father."

I glanced at the data sheet before handing it to Nick. "What do you think?"

Nick studied it for a moment before looking at me and Greg. "What I want to know is, if they have so many DNA samples from this bastard, why doesn't someone have him in custody?"

The data sheet had profiles for three of Franklin Pierce's aliases and we still didn't know his real name, but at least now we knew he was the father of Chelsea Smith's child and as such, he had motive to kill her.

Nick gestured toward the hall. "I'm going to get a hold of O'Reilly and see if he can get a few uniforms to run down the participants of that Citizen's Patrol class, I think we're going to want to talk to them to see if they can give us any insight on this guy."

I nodded. "Ok, looks like we're pulling another double." I let out a sigh.

Nick shook his head. "We are not pulling a double. You have a doctor's appointment for your hand after shift, and I'm taking you. We can work up until then, but you also need to get some sleep, Ms. Sidle." He had that fatherly look again.

I raised a single eyebrow at him in return and smirked. "Ok, but just remember, I do know how to brush my teeth."

Nick chuckled. "Point taken. I'll let you know if I find out anything." He turned and left the DNA lab.

I turned my attention back to Greg. "Uh, Greg."

Greg smiled as he worked on another sample, not bothering to look up. "Sara, if he hurts you, let me know, I'll beat him up."

I smiled. "Ok, I'll keep that in mind." I turned to leave, but then glanced back at Greg. "Thanks for getting this back so fast. I appreciate it."

He glanced up and grinned.