"Your pulse has quickened, your pupils dilated and there's a flush to your cheeks." Osgood was matter of fact as she stated her observations. Kate sat at her desk opposite the younger woman and simply blinked in response. "You've just bitten and and licked your lip and your breathing's grown heavier. In fact, I can see the rise and fall of your chest. A clear sign that you're aroused." Kate involuntarily squirmed a little in her chair and Osgood smirked, maintaining eye contact throughout.

"Are you trying to seduce me Miss Osgood?" Kate ensured she remained perfectly still, behind the relative safety of her desk.

"Your voice has deepened, become raspier and you're shifting in your seat. It begs the question; who's seducing who, Ms Stewart?" Osgood raised an eyebrow at her superior and her smirk remained in place.

"You should tread carefully young lady, this conversation is bordering on insubordination." Kate's voice was stern and serious but deep and husky at the same time and Osgood shivered involuntarily as a wave of arousal shot through her own body.

"I'm sure you can find a suitable way to reprimand me." Osgood blinked at Kate several times, challenging her to keep going.

"Well, I…" Whatever Kate had been about to say was cut off as the door to her office opened and a uniform UNIT officer strode in.

"Oops, sorry Ma'am. I didn't realise you were still here this late and the lights were down low. I just wanted to put this report on your desk." The officer handed the papers to Kate and she took them from him.

"Thank you Corporal." She bit out tersely, annoyed at having been interrupted.

"Night Ma'am, Miss." He inclined his head at Osgood, walked out and shut the door behind him. Osgood burst into laugher and Kate held her head in her hands and groaned.

"Oh god! That didn't just happen did it?" Kate was clearly embarrassed and Osgood nodded with a grin.

"Mmm hmm. Although, it could have been worse." Kate looked up at her sharply then. "We could have been in the middle of very serious disciplinary action." Osgood bit her lip this time and gave her boss a challenging stare. Kate stood up from her desk, grabbed her bag and coat and indicated for the younger woman to follow her.

"Osgood, the next time we decide to role-play in the office remind me it'll just be easier to take a cheeky afternoon off!"

"Oh but where's the fun in that? You did say we needed to keep our sex life interesting." Osgood giggled at Kate's embarrassment all the way to the car.