A/N: Cath/Sara pairing and Greg/Sara friendship. Rated T for mature content, will rise to M for second chapter.

Make Your Mark

Chapter One

"Sara, I just want you to know that when we were in the shower together, I didn't see anything." Greg said as he and Sara walked down the corridor towards the locker room.

"Really? Gosh, I saw everything." Sara responded with a trademark smirk on her face.

"Oh it's like that, is it?" Greg feigned shock, his lips curving into an amused smile. "Well, did you like what you saw?" He wiggled his eyebrows suggestively to which Sara couldn't help but laugh.

"In your dreams, babe." She answered through giggles.

"You know, I did see something in that shower..." It was Sara's turn to look surprised.

"Did you now? And here I was thinking you were such a gentleman."

"No, nothing like that. Although I'll admit I was tempted, I am, as you say, a gentleman." He bowed dramatically to accentuate his point. "My gaze remained downwards at all times. Therefore I saw your ankle. Or more to the point, what was on it." Sara nodded in understanding.

"I never imagined you to be the inked up type. That's an image to add to my fantasy collection; you lying naked on my bed, all tats and..."

"Greg!" Sara cut him off, trying and failing to suppress a grin. Although she had no romantic interest in her younger co-worker, it was flattering to know he found her desirable.

"Hey, I'm only human!" Sara gave Greg a playful slap on the arm.

"So, what's the story with it? The tattoo, I mean." The pair reached the locker room, splitting up to go to their own lockers.

"There's not much to tell." She began, stepping out of her dirty coveralls and rummaging through her locker for a new shirt. "I got it on my 21st birthday. I chose a flower because it was pretty but simple and my ankle because it could be easily hidden when necessary."

Greg nodded, pulling a clean t-shirt over his head.

"Have you got any others?"

Sara stayed facing the locker, suddenly finding its contents very interesting.

"That's a yes!" Greg grinned excitedly, looking like a kid at Christmas. "What are they? Or more importantly, where are they?"

"Haven't you got some expensive coffee to brew or something?" Sara closed her locker and turned to face him.

"Oh no, you're not getting away with it that easily. Spill." He copied her actions, his shoulder leaning against the lockers.

"No way." Sara shook her head defiantly, a smirk creeping on to her lips.

"Well I'll just have to keep a look out then, won't I?"

"Oh trust me, Greg, you will never see thatone."

"What's this?" A voice from behind them made the pair jump and turn to face the source of it.

"Oh, hey Catherine." Sara replied nervously. The sight of a bare-footed, post-shower Catherine dressed in a fitted red t-shirt and black slacks, roughly towel drying her strawberry blonde hair, caused Sara's pulse to accelerate.

"I've been finding out a little more about Miss Sidle here. Seems she's not the good little girl she makes herself out to be." Greg nudged Sara, flashing her a cheeky smile to which she blushed.

Catherine watched their flirtatious exchange, eyes fixed on the brunette. Images of 'bad girl Sara' flooded her brain turning all coherent thought to mush.

"Oh?" She managed, as she propped herself up against the wall.

Sara opened her mouth to speak but Greg beat her to it.

"Sara's got a tattoo on her ankle. I saw it. Apparently that's the only one I'll ever see."

Catherine's eyes widened a little.

"Why's that?" She spoke quietly, more inappropriate images bombarding her mind.

"Because...it's somewhere...private."

The blonde could feel her eyebrows meeting her hairline. The damp towel that had been dangling over her arm fell to the floor. She felt a wave of arousal wash over her – she really wanted to see this tattoo.

"Greggo! Body at Lake Mead. Meet you at the car." Nick's voice bellowed through the room, breaking the tense silence. Greg sighed.

"We'll finish this later." He said, exiting the room.

The two women stood there in silence. Sara shifted awkwardly on the spot, not daring to look up from the ground as Catherine's eyes bored into her. The blonde was desperately trying and failing to control her rapid breathing as she imagined various tattoo designs and possible locations on her colleague's svelte body. Sara cautiously looked up and met her superior's gaze. Biting her lip nervously, she walked forwards, closing the gap between them. Catherine's face showed surprise at the sudden movement but her grey-blue eyes portrayed desire. As the tension in the air grew, Sara dropped her gaze.

"Do you have any tattoos, Catherine?" She spoke in a low, gravelly tone as her chocolate brown eyes slowly wandered up Catherine's slender figure and eventually met crystalline blue ones.

"Yes. One." Catherine didn't trust her shaky voice enough to answer in sentences greater than one word. She watched the brunette's pupils dilate further and her breath hitched.

Without saying another word Catherine turned her back to Sara and slowly lifted her t-shirt over her head and dropped it on the floor, revealing a small tattoo on her left shoulder blade. Catherine gasped as Sara cautiously slid her bra strap off of her shoulder to enable her a better view. There were no images or words, just a date.

10~27~1994

Sara lightly brushed her fingers over the soft skin, delicately tracing the numbers. Catherine shuddered at the contact, eliciting a quiet moan.

"Lindsey's date of birth."

The blonde's voice was no louder than a whisper as she fought to control her body's reactions to Sara's gentle touch. Sara's fingers slowly began to move lower, tracing a line down Catherine's back, sweeping over her red lace bra and stopping at the waistband of her pants.

Catherine spun back round, her eyes fixed on Sara's. She saw in them what she felt in the depths of her stomach – pure, unadulterated lust.

Catherine placed her hands on either side of Sara's face and leaned in closer, brushing her lips against Sara's in a gentle, almost chaste, kiss. She pulled back a little in order to gauge her partner's reaction. When she didn't back away, Catherine took it as her cue to continue.

Catherine resumed the kiss, placing a little more pressure on the brunette's lips. She felt Sara relax and her hands slowly made a trail down the brunette's body and eventually came to rest on her waist. Sara began to respond, deepening the kiss, causing a soft moan to escape from Catherine's mouth. Sara was spurred on by the flood of desire that hit her as she heard the blonde moan and decided to take control of the kiss. She wrapped her arms around Catherine's neck as her tongue flicked over her bottom lip, demanding entrance which Catherine immediately gave. As their tongues clashed in a passionate fight for dominance Sara took a step forward, effectively pinning Catherine against the wall as her long fingers tangled in her strawberry-blonde hair. Catherine's lips left Sara's and began peppering kisses along her jaw and down her neck, pausing to suck forcefully on her pulse point causing Sara to emit a low groan. Her tongue trailed back up its path before her mouth encased the sensitive skin of Sara's earlobe, nibbling gently.

"I showed you mine." Catherine whispered seductively in Sara's ear, the warm breath on her hypersensitive skin making the younger woman shiver. "I think it's only fair that you show me yours."

A/N: Chapter 2 will be up soon. All feedback gratefully received!