Beckett and Castle go undercover to catch a drug kingpin who murdered 13 of his mules. (first castle fic, I'm trying to learn the minor characters still)

Friday Afternoon

"Beckett I think we can both agree that this is a dangerous undercover assignment, and Castle would be more believable as your boyfriend than Ryan or Esposito." The captain was trying to reason with her and get her focus back on the case.

"Sir I just think it would not be smart to put a civilian undercover, especially with such an important case, the department has been after this guy for months. In fact almost a year" Beckett almost begged.

Looking back at Beckett, hiding his humour behind a straight face "Sorry Beckett did you just infer that I'm not smart?"

Kate Beckett quickly realised what she had done, and how she was obviously not going to win, and gave in "Of course not sir, I didn't mean it the way it came out." Time to admit defeat, "I'm sure going undercover with Castle will be a good challenge." Even in her mind that sounded a little wrong, but luckily it was just the captain and her having this conversation.

The captain walked out of his office towards Castle with Beckett following close behind scowling. Looking towards Ryan, Esposito and Castle the captain let them know what they were dealing with on this case.

The drug 'kingpin' was a black man in his late twenties with a taste dealing drugs, drinking and young socialites that were loose and friendly. "Alright, this investigation should be as quick as possible, but more importantly done properly. I think we need to stage it over 3 nights, we will send Castle in as himself and get him VIP entry to the club that our suspect owns, we know he is always in on Friday nights to keep an eye on everything" Captain Montgomery saw the look of fear on Beckett's face. "We want to establish some trust and a connection between the two so we will be asking you to get close to him firstly by purchasing some cocaine."

Castle looked surprised "Wow, this is an awesome case" smiling from ear to ear.

"Castle I hope you won't mind but if the opportunity comes up you and Beckett might have to actually use some Cocaine. Now this is a very delicate situation, its unlikely our guy is going to trust someone who won't use some of his product, so we have to be clear on what we will allow you to do whilst undercover." Sternly looking at Castle, ensuring that he is prepared for what will most likely happen in this investigation.

Castle looked at Beckett leaning against a desk zoning out of the conversation, Castle asked "what will Beckett be doing whilst undercover with me".

She rolled her eyes; of course he had to make everything sound dirty. Her thoughts were interrupted by the captain "Beckett will be dancing at the club the suspect owns; she has an interview next week and dancing lessons every day until then. We are aware he likes to offer his dances services to his VIP's and we want you to take a special interest in Beckett while you're there"

Castle smiled, and looked at Kate, she looked nervous. But who wouldn't be after finding out they have to learn how to pole dance. "Wow, this is gonna be fun"

Kate decided it was time to harden up and get this over with, walking up to Castle she leaned in and whispered in his ear "Don't worry Castle, I know how to work a pole"

Castle visibly shivered and watched Kate Beckett saunter out of the office on the way to her first dance lesson. That one line will provide enough fantasies to last a year.

Monday Morning

Kate Beckett walked into the precinct feeling confident and sexy, so far three days of pole dancing classes were complete and she was sore but actually getting somewhere with her 'tricks'. It sounded so dirty, which is possibly due to the pole involved in the situation, but after learning this style of dancing for 3 days she had a newfound respect for pole dancers. It is damn hard work!

Castle was there before her, which seemed odd. He was in the captain's office, which seemed even odder. Must have had fun at the club on Friday night no doubt, Kate turned around fast as they walked towards her.

"Detective Beckett, Rick here was updating me on what happened at the club over the weekend. He has established a connection with our suspect and is on the VIP list or Friday this week. He showed distaste in the women who were offered to him on Friday night, mentioning he liked a different type of woman fitting your description. So we are hoping that once you're in it will be easy to connect the two of you on Friday night." Captain Montgomery looked Kate in the eyes for a moment, unsure of how to ask about her lessons. "So... how have the lessons been going? Are you feeling comfortable enough to audition or interview for the job?"

Watching Castle fascination in the question was fun, "Yes I'm really confident I'll be up to the standard by Wednesday. I just want to perfect a few of my tricks and shop for something good to wear to the interview." She paused, leaving Castle to stare at her with his mouth open almost unable to think. "However I want to impress him" Looking Castle in the eyes "Castle do you know what type of lingerie he prefers on his staff or at least the girls he really likes?"

Castle inwardly groaned, this was going to be much harder than it seemed. Realising he had paused for too long when Beckett yelled out "Castle..."

"Oh yeah sorry, he seemed particularly into anything with black lace, most of his girls wore that in some shape or form" he looked like he was trying to imagine her in black lace.

"Great, well I better go shopping sometime tomorrow for something suitable, perhaps not just black lace but something that will let me stand out from the rest of his girls" she loved teasing him. Although she really shouldn't let him get the wrong idea, he already had a free pass to a lap dance if this investigation works out the way it was planned.

Why do gangster drug lords have to do their business with women and dirty parties? The captain was the first to speak up "Well since you know what is required inside the club Castle you should go along on Tuesday and give your opinion on the costume."

"Captain I can definitely handle buying lingerie alone" Beckett was about to die, this cannot be part of the deal what is he thinking.

"Detective, I'm not asking that he help you change, just that he show you the kind of outfits they wore inside the club, nothing more." Castle smiled one of his most arrogant 'I win' smiles.

"Fine" Looking at Castle "But you can meet me at the shopping centre, not anywhere near the dance studio" She warned, hoping to god he didn't even know where that was.

"Not a problem Becks" he winked as she walked out the door for her second last dance lesson before the big interview.