A/N: First attempt at a CSI fanfic, dunno how it's gonna go. Hopefully okay. May be a bit slow moving at first,  but stick with it. Please review let me know how I'm doing. Also I don't know how much character family info has been given over the various episodes, so if any of this is wrong… sorry. Please review.

Standard disclaimer applies, don't know them, don't own them, please don't sue yadda yadda yadda.

Family Portrait

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Nick yawned and looked up from his most recent case report, hearing loud heels clap on the corridor floor towards him. He frowned at the unfamiliar figure of a young woman in a black suit. "Can I help you?" He asked, stepping in front of the figure slightly, stopping her from her reaching her destination.

She raised an eyebrow and looked him up and down. "No." She replied simply, obviously irritated, before stepping past him and continuing down the hallway.

For a moment he was taken aback by her abruptness and lack of manners, watching her as she rounded the corner and disappeared from view. He paused there for a moment, not moving, staring at the spot she'd last been seen.

He woke from his daze at the sound of someone clearing their voice. "Uh, Nick?"

He looked up, seeing Grissom standing there, eyeing him unusually. "Yeah?" He asked, shaking his head.

"What are you doing?" The older man inquired.

Nick opened his mouth to speak, pausing before he did so. "Nothing…"

"Well shouldn't you be doing something?" Grissom suggested, the Texan's actions confusing him.

Nick nodded once. "Yeah… don't visitors have to wear badges? Or passes? Or something?"

"Yes" Grissom replied slowly, "Why?"

Nick pointed behind him. "I just… someone, out of place…" He trailed off; shrugging at the look Grissom gave him. "I dunno, just seemed weird."

Grissom nodded. "Right."

~~

"What are you doing?"

Greg jumped out of his skin, the disapproving voice breaking into the unusual silence in the lab. "Holy. Shit." He said slowly, hand to his chest, eyes wide. He looked over to the doorway, his eyes growing even wider if possible. "You?" He asked, his voice somewhat disbelieving as he looked at the person before him.

"Indeed." The woman replied. "And you." She paused, her eyes critically scanning the room. "You're a lab rat." She told him, walking into the lab and finding a stool to sit on. She eyed it with disgust, checking to make sure nothing was on it before sitting down.

Greg frowned at her. "I'm not a lab rat. I'm a scientist—"

"Same thing." She interrupted.

He rolled his eyes at her. "What are you doing here?" He asked, "And don't touch that." She pouted at him and he gave her a warning look. "Seriously. You shouldn't even be in here."

The woman rolled her eyes and moved her hand away from the petri dish on the counter in front of her. "You're so much like Dad." She mumbled, observing her nails, chewing irritatingly on her gum.

"Why are you here?" Greg repeated, his patience wearing thin.

She crossed her legs, repositioning herself in her seat. "It's kind of a funny story really…" She began lazily, running her fingers through her long brown hair.

Greg crossed his arms, waiting for her to continue. "Well?"

"Well you know—"

"Who are you?" A voice from the doorway interrupted. The two looked up to see Grissom standing there, arms folded, Nick by his side, watching them with interest.

Greg shifted uncomfortably. "Uh, Marie, this is Gil Grissom, my boss, and Nick Stokes." He paused, cringing slightly at the look she was giving them. "Guys, this is Marie. My sister."

"What's she doing here Greg?" Grissom inquired, his tone holding disapproval.

Marie studied the two in the doorway for a minute before turning to her brother. "I don't care who they are." She told him simply.

"And I don't care who you are. You can't be here." Grissom told her, turning his attention away from Greg.

"Well I am, so… tough shit." She told him simply, turning back to Greg, flicking her hair behind her shoulder. "Look Greg, I need to talk to you."

Greg looked nervously from Grissom to Marie. "Okay…"

She raised an eyebrow. "Alone?" She suggested, irritation still present in her voice.

"Marie, you really can't be here." He told her.

"All I want is five minutes." She rolled her eyes at Greg's look, shaking her head at Grissom and Nick's presence. "Fine have it your way." She stood up, readjusting herself. "Mom's dead." She headed for the door, ready to leave. "Just thought you should know."