They were both undressed by the time they reached her bedroom, leaving a trail of clothing – mostly hers – on the way. He closed the door behind them and smiled as he pulled her into his arms, kissing her softly as he ran a hand along her side up against the swell of her breast and then to her chin where he pulled down slightly to open her mouth to his tongue. The kiss deepened and her grip tightened on his hip as she felt her knees start to get a little weak. He supported her easily, his hands cupping her buttocks and holding her hips tightly against his own, so she could actually feel when he started to get hard once more. She smiled into the kiss and he pulled away a little when he broke it, even though he was still holding her.

"What can I say?" he said, good-naturedly. "That's what you do to me."

"I can live with that."

He took her hand and they went over to the bed. She sat down on the edge looking up at him, wondering what he had in mind for her.

He didn't make her wait long. He went over to her robe, which was hanging on a hook on the wall, and took the belt from it.

"I was thinking all day of what I wanted to do to you," he told her, walking back to the bed. "And how I wanted to do it. Of course, your handcuffs are out of the question. They're too sharp." He reached for her hand and brought her wrist up to kiss it, tenderly. "I thought about going and getting some padded ones, but then the question would be where do I keep them when we're not using them?"

She smiled.

"Not at your place?"

"Are you kidding? Do you know how much I would have to put up with if they were found? Oh, no, my dear detective…"

"So…?"

"So we're going to use this." He held up the belt, which was very soft. "I'm going to put a slipknot in both ends, like so…" and he did it. He stood up and went over to the head of her bed, threading it through one of the iron bars that ran the length of it. "And now we put one wrist in each loop."

She scooted up on the bed and lay down on her back, bringing her hands up to the headboard for him. It was an odd feeling to have him tighten the loops on her wrists, but she noticed that her hands were close enough that she could actually take the slipknots off herself. She was pretty sure he did that on purpose, and she appreciated the thought behind it.

He looked down at her, and frowned slightly.

"Feel okay?"

"Yeah…"

"You look nervous."

"I'm okay."

"We don't have to do it like this," he told her, settling on the bed beside her. "I can still-"

"I'm fine. Really." She wriggled a little, trying to get comfortable and then smiled at him. "What now?"

He stretched out beside her, resting his weight on his elbow and admiring her body with a smile of his own. His hand ran down her belly and slid along her thigh, which opened slightly before she realized what she was doing.

Castle leaned over her and kissed one nipple as his hand teased the other one, making it hard immediately.

Beckett sighed in pleasure and arched just a little, silently asking him for more. Which he was more than willing to give her. He opened his mouth and startled suckling her nipple, alternating between one and then the other, his fingers sliding along her belly once more and down between her legs. She gasped when he slid his finger along her slit until he found her clitoris and started to circle his fingertip against it, and he smiled when he felt just how excited she was already.

"Yes…"

He pulled his head back and smiled down at her, taking his finger from between her legs and putting it in is mouth.

"Mmmmm…"

She felt her breath catch in her throat and ached for him to touch her again.

"You're teasing me," she chided.

He smiled.

"Sorry."

She tensed as he got up off the bed and moved to stand at the foot of it, looking down at her for only a moment before he knelt down and nudged her legs apart with his hands and kissed the insides of her thighs. He looked up at her.

"Ready?"

Beckett nodded, practically quivering with anticipation. Her body already knew how well he could use his mouth and she was eager to have him do it to her again. Luckily for her sanity, he didn't make her wait for that, either. He lowered his head and pressed a kiss against her slit, which sent a jolt of pleasure through her. He had to have felt it as well, because she heard him chuckle and then felt his tongue invade her in a way that was as marvelous as anything she'd ever had done to her before. She pressed against him as well as she could and Castle responded by taking hold of her hips and pulling her closer to his mouth, his tongue flicking along her clitoris and then sliding back in her only to go back to her clitoris an instant later, quickly driving her crazy with the motion.

She'd been anticipating all day so it was hardly a shock to her – or him – when she climaxed almost immediately. Her back arched and her hands tightened on the belt she was holding while she bit back a scream that would have certainly had the neighbors calling the police to report a murder. He was oblivious to that. He started suckling her clitoris while she writhed against him and the restraints that held her hands, telling her without words as she rode the wave of pleasure from the first orgasm that it wasn't going to be the only one he expected from her.

His hand joined his mouth, rubbing and pinching wherever he wasn't licking and suckling and under that two-part assault she didn't have any more resistance than she did when it was just his mouth. She moaned and started bucking once more, feeling herself building to another climax so quickly that she never would have believed it if it hadn't been her experiencing it.

"Castle…!"

He murmured something. She couldn't understand it, but felt the vibrations against her which only served as yet another way for him to give her pleasure. She came again, and he buried his tongue inside her, his hot breath against her twitching clitoris making the sensations that much sweeter, and prolonging the orgasm in the most pleasurable fashion. She shuddered against him, and Castle kissed her once more before pulling away so he could look down at her.

Drenched with a fine sheen of sweat, she looked well on her way to being satiated, but it wasn't enough for him. He moved back, until he was standing at the edge of the bed with her looking up at him, panting and waiting to see what he wanted to do next.

"Roll over onto your stomach," he told her.

She raised an eyebrow at that, but did what he wanted. The belt of the robe was plenty long enough to give her that kind of mobility and she turned over onto her belly, feeling just a little uncomfortable at the position, but not nervous about doing it.

He checked the belt that was restraining her to make sure it wasn't too tight, decided that it was and loosened it just a little.

"Don't let me hurt you, Kate," he admonished while she watched him.

She smiled, touched that he had checked.

"I'm fine."

He ran his hand along her hip without breaking eye contact with her.

"Yes, you really are."

He moved out of her line of sight, but she felt him rejoin her on the bed only a moment later. She felt him part her thighs once more and he lifted her hips putting her on her knees. She shifted a little to make the position more comfortable and Castle put a couple pillows under her to take her weight since her hands wouldn't be as much use as they normally would in such a position.

"You okay?" she heard him ask as she felt him slide his hand along her inner thigh.

"Yes."

She expected him to take her. She was certainly in one of her favorite positions for it, and she'd seen just how hard he was when he'd stood up. He didn't, though. She felt his mouth once more take center stage on her and gasped in surprise when he started teasing her clitoris again, clearly not finished feasting on her.

"God…"

"You like that?" he asked her. She could hear the amusement in his voice, and something else that she didn't recognize for certain. Satisfaction, maybe.

"Oh, yes…"

"Good."

He lay down on his back, his head under her, and pulled her down onto him so he could continue what he was doing. She ground down on his mouth, her weight giving her that much more pleasure with every flick of tongue and lips, and she groaned in satisfaction of her own.

It took a lot longer this time, though, even with the new position. He'd already brought her to the edge twice and had driven her completely over. This time she wasn't as anxious for the relief and was able to enjoy the thrill of his mouth on her for no other reason than just to please her.

"Turn around," she told him, trying to look back at him and not lose contact with his mouth at the same time. He held her hips so he didn't have to stop what he was doing and she wriggled just a little. "Let me suck on you."

He pulled his head back from her for a moment, but decided that he'd rather just focus on her. Besides, he was going to be inside her in only a few minutes anyway. And not in her mouth.

"Nope."

She chuckled, but it ended as a gasp when he pulled her back down and took her clitoris in his mouth once more, suckling on her as firmly as he'd taken her nipple into his mouth earlier. She would have tried to move from the sensation, intense as it was, but his grip didn't allow it. Instead he forced her to accept his suckling until she was once more starting to rock her hips against his motions, the pleasure focused at her center, but shooting to every nerve in her body.

"Rick… please…"

She wanted him inside her. Now. He kissed her parted lips once more and then moved out from under her and ran his hand along her back as he positioned himself between her thighs, sliding the head of his throbbing erection along her drenched slit. She lowered her head, arching back against him, but he wasn't positioned right, yet, and he groaned in pleasure when the action moved her against him. He shifted a little, moving himself against her anus and felt her tense under his hands.

"Not into anal, Kate?" he asked her, rubbing himself against her lightly.

"I've never…" she trailed off, still tense, but not trying to escape. She had told him it was his night and he could do what he wanted. She'd meant it. No matter what he wanted from her. "I-"

"Shhh…" he whispered. "We'll try it some other time."

He moved himself along her slit again and this time he didn't hesitate to slide himself into her, her wetness making it easy for him to hilt himself inside her in a single thrust. She groaned in pleasure and pressed back against him, hard. Castle used his hands to hold her hips as he pulled back, drawing himself out of her almost completely before ramming back into her. He wasn't gentle, and he wasn't patient, but she wasn't, either. She was backing into him with each of his thrusts, meeting him and matching his lust and passion with her own.

He felt himself tense, ready to climax, but tried to hold back to give her a chance to have a final release as well. It might have worked if she hadn't suddenly tightened the muscles inside her, the ones that were sheathing him so pleasantly. The tremor rippled along the length of his shaft as he thrust into her and he groaned with his release and pushed himself hard into her as he came, holding her hips tightly against him and grinding himself harder into her with every spurt.

She cried out, unable to stifle her own pleasure as his orgasm set off a final one for her, peaking after his, but exciting him all the same. They both collapsed, him still in her and resting most of his weight on her because he couldn't have moved just then if his life had depended on it.

"Wow…" she whispered. "That was intense."

He chuckled and kissed the back of her neck as he pulled out of her and wrapped his arm around her and rolled her off the pillows, careful not to pull her to the end of the tethers she still had on.

"It was perfect," he agreed, reaching up and loosening the slipknots so she could get her hands free. Her wrists were both red from rubbing against the fabric, but there wasn't any blood. He moved the pillows and hugged her up against his body, putting his leg over hers to hold her in place.

She wasn't planning on moving anyway. She cuddled against him, her eyes closing and her breathing slowing down a little as she relaxed.

"There's something to be said for bondage, huh?" he asked, reaching for a blanket and pulling it over both of them.

"It was definitely an experience," she agreed. "Thanks."

He kissed her nose, smiling tiredly.

"It was definitely my pleasure."

OOOOOOOOO

The End!

So that's the story. The way that episode could have ended (and definitely did in my mind). Thanks for reading it. I might do this again sometime!