The entire time Greg was helping Nick and Sara process the scene of a drive by shooting near the airport, he was trying to formulate what the pair were talking about on the way over. Whatever had happened when Sara had talked to Grissom had pissed her off. Not that this was unusual, she seemed to get pissed off a lot when it came to Grissom. Greg respected the man as a scientist and as his boss, but he didn't understand why Grissom had never made a move toward Sara. If Sara had been throwing herself at Greg, she would have only had to do it once.

Greg tried to fit the pieces together. Sara had a headache. She didn't have one now. Nick had some remedy that he gave her. Whatever it was left some sort of smell on her breath that Grissom noticed. Whatever it was pissed him off enough to piss Sara off. Why would Nick care if Sara had a headache in the first place? The only time he cared when a woman had a headache was when. Hmm. Well that couldn't be the case here now. This was Nick and Sara. Sara had a thing for Grissom. Maybe he should ask Nick about this remedy, just in case he needed to offer it to a date. Of course, it had upset Grissom, so maybe it involved insects. Grissom was the only person he knew who probably knew what insects smelled like on your breath. Maybe Nick's headache remedy had something to do with eating Grissom's bugs. He regarded the creepy things almost as children, no wonder he was upset.

"Sanders." Nick looked both annoyed and amused. He had said Greg's name now about three times.

Greg looked up. "Uh, sorry."

"I need you to photograph this." Nick gestured toward a bullet casing on the ground. He had asked Greg to follow him and Sara around as they had collected evidence to photograph the scene and hand them bindles. Greg had seemed distracted since they'd arrived at the crime scene and Nick was starting to get a little frustrated. It had indeed been a case of multiple victims and had all the earmarks of being a gang related drive by shooting. Scenes like this always made him a little nervous because gangs hated law enforcement about as much as they hated each other and had been known to return to a scene just to take a little target practice at police. The sooner they processed the scene and vacated the area, the more relaxed Nick would feel.

Greg took the requested photos and then glanced at Nick, a cheesy grin spreading across his face. "So, Nick, what's this remedy of yours?"

Nick chuckled. "Sanders, stick to the case."

"You know I was thinking, if it's such a great remedy for headaches, I might want to know about it. I mean, you never know when it could come in handy." Greg paused. "Like on a date for example."

Nick glanced up at Greg. "Hand me a bindle."

Greg got a bindle and handed it to Nick. "Of course, if it involves eating bugs, then maybe I'll just stick to aspirin, but if you've got some new wonder cure, don't keep it to yourself."

Nick was stuck on the image of eating bugs. "What the hell do bugs have to do with getting rid of a headache?"

Greg furrowed his brow. If Grissom didn't smell insects on Sara's breath, then what did he smell, and why hadn't the rest of them smelled it? What could it be that would get him pissed off enough to piss Sara off? "Uh, I thought maybe that's why Grissom was mad at Sara. She said he smelled something on her breath and I figured he's the only one who would know what a bug smelled like. I mean I've never heard of using them to treat headaches, but then I don't watch the Discovery Channel as much as you do." Greg stopped and looked at Nick who was trying not to laugh. "Ok, so if it's not bugs, what is it?"

Nick couldn't contain his laughter. "Greg, stick to the case."

"I'll figure this out yet." Greg knew that there was something he wasn't getting in the overall scheme of things, but it was just a matter of time before he put the pieces together.

Nick just shook his head and continued to look for evidence.

Sara walked up with a smug expression on her face. "Find anything interesting?" The tone of her voice indicated that she had.

Nick glanced up at her and shook his head. "Just bullet casings, which you'd expect at a the scene of a drive by." He raised an eyebrow at her. "What do you have?"

Sara smiled. "A pair of women's underwear in one of the vics' pockets."

Nick grinned at Sara. "Well, what do you think? Motive?"

"Well if some guy had my underwear, I might have to make his life a little miserable." Sara raised an eyebrow at Nick.

Greg just stood there grinning. "You need a picture of those, Sara?"

She glanced over at him and shook her head. "We'll do it back at the lab."

Nick looked at Greg. "Any evidence on the body is best left on the body until we do the prelim in the morgue. That way we don't lose trace."

Greg nodded.

They finished up the scene and piled into the Denali. This time, Sara sat in the front passenger seat.

From the backseat, Greg cleared his throat. "So, Sara, why did you have a headache?"

Sara shot Nick a warning look before turning toward Greg. "Why does it matter?"

Greg shrugged. "Just curious." He was quiet for a few more minutes before he started talking again. "Uh, so why do you think that guy had women's underwear in his pocket?"

"Trophy maybe?" Nick suggested.

Sara narrowed her gaze at Nick. "Trophy, huh?"

He knew what she was implying. They really needed to talk. "I'm thinking this guy took advantage of the girlfriend of a rival gang member and maybe the shooting was payback to avenge her honor."

"Good theory." Sara had to admit. She and Nick really needed to talk though.

You could hear the toothy grin in Greg's voice. "So, Sara, what kind of underwear do you wear?"

Her jaw dropped and a bit of color rushed into her cheeks as she looked back at Greg. "That is absolutely none of your business."

It was all Nick could do to not laugh. He was very well aware of what kind of underwear Sara wore.

"What do you think, Nick? What do you think Sara wears?" Greg was still grinning at the image forming in his mind.

Nick glanced over at Sara and chuckled. She shot him a glare. Nick looked at Greg in the rearview mirror. "If I had to venture a guess, I'd say Sara would go for comfort over sex appeal." He winked at Sara.

Sara looked at Nick and then at Greg. "I cannot believe you are talking about this."

"I bet you like lace." Greg wasn't getting the hint.

Sara glared at Greg. "If you keep this up, I'll tell Grissom."

Greg stopped talking.

Nick was thoroughly amused, but he didn't say another word either.

Once they arrived back at the lab, they unloaded the Denali and checked the evidence in. Greg took some of the samples they'd collected that they hoped contained DNA to the lab to process. Sara went to her locker to hang her coat up and Nick followed.

She glanced over at him curiously. "Just what did you tell him?"

Nick chuckled. "I didn't tell him anything. He's got a dirty mind all on his own." Nick closed his locker and turned to look at her. "He asked me though if my remedy had anything to do with eating Grissom's bugs."

Sara laughed. "You're kidding, right?"

Nick shook his head. "Maybe we should tell him that sometimes the most obvious thing is the right thing."

"Just not in this context." Sara raised an eyebrow and pursed her lips to restrain a smile.

Nick glanced around to make sure that they were alone. "When do you want to talk?"

A smile flickered across her lips. "After shift. Come over for breakfast, we'll talk then." She moved to close her locker and then leaned toward him and whispered. "Bring my underwear or you're a dead man."

Nick grinned. There was a hint of teasing in his voice. "Should I bring beer?"

Sara frowned and put a hand on her stomach. "If I ever see another beer, it'll be too soon."