Author's Note: A "sleep study" is where they have you stay up ridiculously late the night before, and then have you come in early in the morning where you sleep hooked up to all these sensors. My brother and dad both had to do sleep studies (for different reasons)… cue the Lord of the Rings marathon! (Did you know there's roughly an hundred hours of extras on those special-edition DVDs?)
Castle lay in the darkened room, trying to get to sleep. He'd spent all of last night awake, watching film after film to keep from dozing off. Now that he was supposed to sleep, however, he couldn't.
He glanced over at the monitors next to the bed. The doctors weren't bothering to observe him from a two-way mirror or anything like that; all they had to do was hook him up to the sensors and wake him up eight hours later. If he didn't get to sleep soon, though, they wouldn't have enough data and they'd have to repeat the study again in a week or two.
With a huff, he shifted in the bed. He felt like a lab rat.
There was a slight creaking sound, and he sat up. A shaft of light pierced the dark as the door to the room was quietly opened. A familiar figure was framed in the glow of the lights for a bare moment, before the door shut and the room was plunged into darkness once more.
Castle felt, rather than saw, the person coming towards him. The bed creaked and dipped as that someone climbed onto it, crawling so that they were kneeling facing him.
"Hey." Beckett said softly. He could hear the grin in her voice.
"What are you doing here?" He asked. "How did you even get in?"
"Well, after I dropped you off I had a chat with the doctor in charge, and asked if I could observe you for a short bit. He said sure. He left after a couple of minutes to go and attend to some paperwork, so I was by myself. I saw that you had trouble getting to sleep and… well…"
He smirked and reached out, grabbing her and pulling her to him.
"I don't understand it." He admitted. "I stayed up all night."
Beckett leaned in so that their foreheads were touching. It was both unnerving and arousing that they couldn't see each other; they had to go by touch and sound alone. "I think I know what the problem is." She admitted mischievously.
"And that is…?"
"We usually have sex before we go to sleep. If I'm still at the precinct, I still wake you up when I get home and we do it then. Your body is trained to expect sex before sleep."
He gaped at her. She must have sensed his expression, because she laughed.
"Why, Detective Beckett…" He said slowly. "You have quite the scientific mind. Are you suggesting that you're Pavlov and I'm the dog?"
"No one's arguing about the last part." She teased.
He kissed her on the cheek, which distracted her from his hands, which were finding her rib cage. He tickled her, and she jumped before collapsing against him, giggling madly. "Castle, cut it out!" She hissed. "Stop it!"
He laughed along with her as they wrestled. Finally she got his hands pinned to the bed. He could feel her glare like a laser beam through the darkness.
"So, Detective…" He asked. "Am I to understand that you're here to help me get to sleep?"
In response, he felt her lower herself to press against him, her breath hot on his ear as she bent her head. "Well, sleep might be the result." She shrugged innocently.
His grin was feral, even though he knew that she couldn't see it. He lurched upwards to take her lips for a kiss, and felt her smile against his mouth as she reciprocated. She kept his hands firmly inside of hers, refusing to let him touch her. After a moment of struggling, he let her take control.
Beckett moved his hands so that he two wrists were being pinned with only one of her hands, freeing the other to move southwards. There was a moment of clicking, then the sound of a zipper being tugged down. Then he felt his pajama bottoms being pulled. He lifted his hips, allowing her to push his pants down his legs. When he felt her press her pelvis to his, he nearly lost it.
She wasn't wearing any underwear, and he could feel her wet, slick skin. She slid herself over his erection; not letting him in, but allowing him to feel her heat. He growled.
"C'mon, Kate." He said.
She chuckled darkly. "Maybe you shouldn't tickle me." She said.
He brought one leg up to hook around her waist, pinning her against him so that he could grind against her a few times. She whimpered.
"Maybe you shouldn't tease me." He retorted.
Beckett nipped at his pulse point. "Fair enough." She whispered, releasing his hands.
He was immediately all over her. He pushed his hands up underneath her sweater, feeling the heated skin beneath. She writhed in his touch, her hair spilling over her shoulders to drape around him, brushing over his face like silken tendrils. He tugged her down to him, kissing her wildly. They were both a little sloppy thanks to the lack of visual aids, but it didn't make it any less erotic. On the contrary, depriving themselves of one of their senses seemed to have heightened the other four.
Although she'd allowed him to touch her, Beckett was still firmly in control. She decided when to get down to the actual deed, and she was the one who set the pace. Not that he minded. Beckett was unbelievably sexy when she was in control.
Perhaps it was the darkness, or her position of power; or maybe his body was more exhausted then he'd given it credit for. Whatever the cause, within a few strokes he could already feel the tide rising within him. He choked out a warning, to which Beckett responded with an eager cry. He took that an encouragement and began to rise to meet her as she lowered herself onto him again and again. Their movements became choppy towards the end, but he kept going, his body demanding that he not stop. The pleasure was at its high point and about to spill over. He grabbed her hips and held her still. Beckett moaned as he pounded into her, her entire body shuddering as he finished frantically.
She wobbled for a moment and then fell onto him, laughing and sucking in air. "Love… love it when you do that." She gasped out.
"Ditto." He replied, chuckling.
He felt her raise her head. "I want to stay, but…"
He shook his head, even though he knew that she couldn't see it. "It's okay." He stifled a yawn.
"I heard that." She admonished teasingly.
He laughed.
Beckett leaned forward and kissed him. "I'll see you in a few hours." She assured him. "Get some sleep, make the doctors happy."
She slipped out of his arms. A moment later he saw her framed in the doorway. She glanced back at him, giving him a view of her glowing skin, sweat-drenched hair and red love marks. Then she closed the door, and he left in the darkness again.
He was asleep within seconds.
This, dear, darling readers, is the last chapter – as of now! I'm out of ideas for this particular series at the moment; hence I am marking it as 'complete'. However, if an idea strikes me (or if one of you sends me a hospital-themed idea), I will add to it. Thank you for believing in the power of my filthy, perverted little mind!
