Catherine sat relaxing in the break room with a cup of coffee when Warrick sauntered in. "Word travels fast when there's decent coffee in this place."

Warrick smiled, "Yeah, well if Greg ever stops making this stuff we're all in trouble." He gestured to the doorway as he poured himself a cup of coffee, "Watch out, the dynamic duo is on the way."

Catherine raised her eyebrows curiously and then suppressed a smile by taking another sip of coffee when Nick and then Sara entered the break room, matching contusions evident on their foreheads. "So did you guys forget to duck or something?" Catherine smirked.

Sara glared at Nick who just grinned and dodged Sara's hand as she tried to swat him yet again. "I was just trying to be a gentleman, and this is what I get in return." He gestured toward Sara. "She gave me a concussion."

"For the record, you gave me a concussion too, Nick." Sara added, knowing that it was going to be some time before her and Nick were going to be able to live this one down.

Catherine interjected, "Well, Nicky boy, the modern independent woman doesn't always understand the charms of you Texas boys." She grinned at him.

Nick grinned and winked at Catherine in return then walked over and grabbed two cups and poured the first full of coffee. Sara had walked over to get herself a cup, but before she could reach in and grab one, Nick offered her the full cup. Not wanting to appear ungrateful, she accepted it with a quiet "Thank you," before sitting down at the table with Catherine and Warrick.

Catherine and Warrick exchanged a knowing glance at the exchange. Nick poured himself a cup and joined the others at the table.

"How's the Vargas case?" Catherine queried.

"Slow going," Nick responded. "I feel like we're searching for a needle in a haystack. We know that Isabel Vargas was smothered with a pillow after she was most likely stunned with a tazer. We even have the pillowcase with an image of her face on it. What we don't have is the tazer, fingerprints, or a DNA match. Dr. Vargas has an alibi because he was in surgery all day. Delia Herrera isn't a likely suspect even though I don't think she can be completely ruled out."

Sara interjected, "Yeah, we're at a standstill unless we uncover some evidence that points to someone specific." She paused and sipped her coffee.

"I've found some DNA on your pillowcase that isn't your vic, the husband, or the housekeeper," Greg said as he entered the break room. "I'm running it through CODIS right now to see if we can find a match."

"Thank you, Greg!" Sara exclaimed grinning at him.

"I can think of other ways you can express your appreciation, Sara, but we might want to be alone." Greg commented suggestively as he poured himself a cup of coffee.

Nick and Warrick shot Greg a glare and Catherine rolled her eyes. Sara just shook her head, "Don't push your luck, Greggo."

Greg turned toward the four CSIs with his full cup of coffee and only then did he notice the knot on Sara's forehead, "Hey, what happened to you, Sara?"

Sara grinned smugly, "Nick gave me a concussion."

Greg's eyes narrowed at Nick.

Nick raised an eyebrow at Greg, "Hey, before you say anything, Sanders, you might want to take note of this right here." Nick pointed at his own bruised forehead. "Sara gave me a concussion too. It takes two to tango you know."

Greg waggled his eyebrows, "Sounds kinky."

Sara blushed and tried to suppress a smile. Nick grinned and sipped his coffee.

Catherine gave Greg a withering glance, "Can it, Greg, and get your mind out of the gutter."

"Yeah, Sanders." Warrick added rolling his eyes at the lab tech's comments.

Nick looked over at Warrick and Catherine, placed a hand over his heart, and batted his eyelashes, "Thanks for defending my honor."

"Hey, guys, as much as I'm enjoying all of this, I'm going to get back to work." Sara commented as she picked up her coffee cup and placed it in the sink. "Greg, let me know if CODIS spits anything out." She turned and left the break room heading back toward the lay out room she'd been working in earlier.

Nick also stood, "I supposed I should get back to those background checks. Greg, page me if you get any hits." He placed his coffee cup in the sink and headed back to the computer lab.

"Was it something I said?" Greg asked with mock innocence. "Well I suppose time, tide, and CODIS wait for no man." He took a last sip of his coffee before placing the cup in the sink with the others, winking at Catherine, and heading back to the DNA lab.

Catherine took a long sip from her coffee cup and looked over at Warrick, "So, how did Nick and Sara bruise their foreheads anyway?"

Warrick grinned, "I think they were butting heads."

Catherine gave Warrick a withering glance.

"Seriously, you know about as much as I do." Warrick replied.

"The sexual tension between those two is getting a little thick." Catherine took another sip of her coffee.

Warrick chuckled, "Tell me about it. If they don't figure it out soon, we might have to give them a little push."

Catherine raised an eyebrow and a devilish smile crossed her face.