Even deep in his concentration, Derek registered the click of his office door locking in the background. The click did something to rearrange the chemicals in his brain away from the report he had been reading and somewhere a lot more...fun.

He knew what that sound meant.

When he looked up from his screen he found his favorite girl swaying over to him in the prettiest little sundress. It was cream, covered in soft pink flowers, accenting her skin perfectly. Dainty straps held it up on her shoulders; the top of it clinging to her curves before flaring out a little at her hips. But his favorite part was the teasing slit up one leg.

"Hi," she said, those pink painted lips tipped into a sultry little smile that made all his blood run south. "You hungry?" she asked, making her way to his desk, within arms reach of him.

"Starving," he murmured, running his eyes over every inch of her.

"What are you in the mood for?" she asked, hopping onto the clear corner of his desk. Her fingers wrapped around the edge of it; her shoes slipped off her feet, clattering into the hardwood beneath.

Looking between the discarded shoes and her swinging feet, and painted toes, Derek smiled. He rolled her chair closer to her, bringing her bare feet to rest against his knees.

He wasn't lying when he said he was starving. Work had tampered down his desire, but seeing her there, looking so cute and sweet, well, suddenly he was feeling like the big bad wolf.

His hands started massaging her feet absentmindedly as he looked up at her. He pressed his thumbs into her arch, making Casey's eyes flutter in delight. He leaned back in his chair getting comfortable. He had slipped off his suit jacket earlier, leaving him in his crisp white button-up. The tie he had put on that morning had also been abandoned, lying next to her on his desk. He looked at the material, tempted to wrap the silk around her ankle just to see her face when the smooth fabric brushed her sensitive skin. He briefly wondered if she'd enjoy that...

"Are you on the menu?" he finally asked, breaking their trance.

"Me?" she asked with an arch of her eyebrow, acting coy. And maybe it was his imagination but he swore he saw her knees part just a sliver. An invitation maybe?

Derek eyed the sliver of thigh that peeked out from the slit of her dress. His fingers aching to touch, his teeth sinking into his bottom lip was a pale replacement. He had never had sex in his office. Not even close to it. But suddenly all he could think of was Casey laid out across his desk, her back arched and her thighs spread wide enough to accommodate him.

He pulled his eyes up her body he saw a dark cloud of want in those stormy blues. "You know what I want, McDonald," he admitted, not being able to keep the tension from his voice. "I just can't have you," he mumbled, mostly to himself.

"And who says you can't?" she countered, her voice practically a whisper like she was lost in the moment with him.

Derek couldn't hold himself back, he slid his chair even closer, and pressed himself as close as he could in between her knees, pulling her hips up to the very edge of the desk. "You're playing a very dangerous game, Casey," he warned her.

"I'm not playing," she promised. "I think it's time I get what I want. See how the other half lives," she smirked, placing her hands flat behind her and slowly lowering herself back so she was laid out across his desk. His laptop was pushed away to the edge compactly forgotten.

Derek stood to get a better view of the wonder in front of him. His eyes roamed over her body like she was the sweetest desert. Her hair splayed out behind her head like a halo, most of it falling off the edge of the desk.

He knew the wooden desk couldn't be comfortable but he wasn't going to dare move her. Afterall, he had laid herself out for him to enjoy, so he would do just that.

He stood between her parted legs, his fingertips slowly trailing up her calves, her knees, and up her inner thighs, only to make a last-minute detour outwards to tease her. He pushed the skirt of her dress up as high as he could, the fabric bunching around her middle. That's when he noticed that she hadn't worn anything underneath. Derek's thumb swept over her bare hips, where the underwear would normally sit. That smooth skin of hers would drive him insane. He wanted to drag his tongue across it, leave teeth marks and delicious bruises on her. Mark her as his. Even if she wasn't he could pretend.

Derek looked up at her, his eyes stormy and dark.

"Casey," he said her name like she was his prey, caught in his trap. But oh how she willing gave herself over to him.

"Hmm?" she hummed, eyes fluttering closed as his fingers traced invisible patterns across her hip bone. His touch was light, teasing her ruthlessly, but never touching where she wanted. He watched her breath quicken and her cheeks flush. The absolute desire slipping over her features was breathtaking.

"Did you forget something this morning?" he asked his hands up to dress up high enough to reveal everything to his greedy eyes. She was glistening and fucking perfect. Hit mouth watered in anticipation of what was to come.

"I-I don't think so," she managed to reply.

Fuck. She had planned this. Yes, he was the one in control, but only because she let him be. Something about that was so fucking sexy. "You sure?" he asked bending down, his wet lips pressed against soft skin just below her belly button, but right above the spot she wanted him most.

Casey didn't reply, but her breath staggered out of her chest. She was so needy and all for him. It was a rush, he couldn't deny it.

"Princess," he teased. "Look at me," he instructed.

She did, craning her neck to spot him, just barely. Her eyes were so low. "You see that window behind me?" he asked his voice like silk-wrapped sin on a platter. One hand wrapped around one thigh, bringing it up and out, allowing him enough space to dip down between her legs.

Casey nodded and then moaned when his soft tongue took one soft tortuous lick. Still not exactly what she wanted but getting closer and closer. "Anyone could see you, spread out in front of me like this," he lied. Because no one could. And he'd never let anyone see her like that, no he was too possessive for that. Plus, that window, along with every window on the estate had privacy tints on them. No one was seeing into that room. He'd kill whoever tried.

Casey sucked in a breath when his lips wrapped around that bundle of nerves in the way she wanted. He wasn't sure she was even listening to him but still, he went on, pulling back once more.

"You like that, don't you? The thrill of being caught?" he asked, his fingers trailing down her thighs and meeting the soft wet flesh for the first time, spreading her open for his greedy eyes.

"But you mine though, aren't you, Princess?" he teased with more gentle licks and soft tender caresses. It was good but he knew it wasn't enough. He was still teasing, still playing, still lighting her up for the main event.

"Yes," she sighed, agreeing quickly. "Please just…Der," she cursed, back arching off the desk to get him where she wanted him.

And with that acknowledgment, that she was his, he gave in, pulling her legs over his shoulder and finally diving in.