Disclaimer: CSI belongs to CBS and Jerry Bruckheimer.

Author's Note: I started writing this story a while ago, and I'm kinda stuck right now...Please review, and maybe add some suggestions? Thanks!

Knock 'n' Roll

By MBInc

Chapter 1

"But Grissom, you promised!" Catherine stood in Grissom's office, hands on her hips and frustration written all over her face.

"I asked you about it a month ago" She stated, her anger clearly detectable in her voice.

"I know" Grissom said "But I can't help it Nick came down with a bad case of the stomach flu"

"What about Sara?" Catherine pleaded.

"Can't ask her. It's the first time in 4 years she accepted a day off without an argument, so I'm not going to ask her"

"Well then I will" Catherine said while walking out off Grissom's office –giving him no time to respond.

"Catherine, wait!" he started to her retreating form, but Catherine didn't stop. Sighing heavily he sat back in his chair.

Catherine walked through the halls of the CSI HQ -still looking really angry cause of all that had happened in Grissom's office just minutes before. Not only had he told her he and Brass would go to the Kenner residence to execute their warrant (while she was lead-CSI on this case and therefore wanted to be there during the search of the garage), but also –and this was the thing that really ticked her off- told her she had to work extra hours on the day she specifically told Grissom she wanted off to spend some quality time with Lindsey.

Her mind still filled with thoughts about how to make it clear to Grissom that he better not pull this kind of trick on her again, she didn't notice Warrick coming her way.

"Hey Catherine, what's the rush?"

She jumped from surprise. "Jeez Warrick, you scared the hell out of me"

"Sorry Cath, didn't mean to. Who got you this worked up?" He asked clearly noticing who frustrated she was.

"Not now Warrick, where's Sara?" She asked scanning the halls impatiently.

"So she caused this huh? What has she done this time?" He added sarcastically.

"No it's not Sara. It's Grissom FYI. Anyhow, have you seen Sara?"

"Grissom? He must've messed up big time. I haven't seen you this worked up since…"

"Well that's great Warrick, now, do you know where Sara is?" She interrupted, sending him an angry glare.

"Whoa, don't take it out on me! And as for Sara, I saw her in the break-room about fifteen minutes ago. Said she had to go to the garage to check something on the SUV from the Kenner's."

"Thanks Warrick" Catherine said while heading off in the direction of the CSI-garage. Before turning the corner she turned back hesitantly, and looked over at Warrick. Her mind finally registered how she had treated her best friend just now and shame washed over her. "Sorry about that. It's just… Grissom wants me to work on Wednesday while I specifically asked him to give me that day off so I could spend it with Lindsey. We already made plans for the whole day" She said, the anger in her voice replaced by guilt.

"It's ok, just cool down a bit, and don't take it out on Sara like you did with me." He took a few steps in her direction and placed a hand on her shoulder. With a twinkling in his eyes he added "just ask her nicely She probably won't mind. You know she wouldn't mind working for you, right?" A smirk spread over his face and he gave a little squeeze in her shoulder. Then he turned and headed for one of the labs.

"Yeah … thanks Warrick" Catherine's anger was now totally gone. She didn't miss the look Warrick had sent her. "What's up with that?" she thought.

"No problemo" Warrick said before he completely vanished in the lab.