He slams her against the door of the evidence room. The thud of her back hitting the door resounds through the cavernous, low-ceilinged room. The cool grey of the cement below their feet cooled the heat that was rising between them.

Beckett shivered.

Castle pressed himself against her needing the closeness. He needed her; he needed to be in her – to possess her the only way she would let him. Once she could deem to let a hand drop from the man that she was so desperately was clinging to, Beckett opened the door behind her.

The door swung open and they tumbled inside. After the quick juvenile stumble, laughing in spite of themselves, they regained their composure. Castle pinned her once again, but this time against the shelf reading "UNFILED PARAPHANALIA." As the shelves shook with the impact, Castle slowly trailed the fingers that had been tangled in her hair down her neck then down her arms. He grasped her wrists suddenly fierce and wrenched them upwards, pinning her hands above her head.

Beckett gasped at the sudden force. She couldn't find her breath, she had to pant just to keep up.

"I need you, Kate." Castle whispered.

"Take me, Castle."

He pulled his lips from hers all of the sudden and a smirk replaced the passion that had been overtaking her lips since they had started in the stairwell. It was that smile at the corner of his mouth that always meant trouble. His hair was tousled from her grip on it from before and when he pulled away to give her a wry smile, she was consumed with the need to drop her hands from the shelf, pull him back to her by his lapel, and bite the lip that sneered at her. She resisted. Just barely. She bit her bottom lip to restrain herself. He kept his hands on her wrists still preventing her.

He leaned in leisurely, tormenting her. He drew his warm hands down slowly feeling every inch of the soft skin on the underside of her arms. She entwined her fingers on the shelf above her. He knew she wanted his touch. He knew she wanted his lips on hers, on her neck and on that place between shoulder and neck, the place that drove her crazy. His lips finally were within a hairsbreadth away and he stopped. He grazed over her neck making her feel the heat of his breath and the sensation of delayed gratification. She groaned in frustration.

"All good things…" He smiled into her neck.

"Shut up and kiss me," She demanded. He didn't hesitate then. He pressed his lips firmly to hers. Their sharp inhale of breath sent shivers down Beckett's back. She didn't take her hands down but she knew what she wanted and she intended to get it.

"Take your belt off…slowly."

He stepped away. She yearned for the return of his touch only for a moment. He did as he was told. But he did more, as per his usual. Castle stepped forward and untucked her shirt. He started at the bottom of her blouse, unbuttoning each button all the while looking straight into her eyes. How times have changed. He thought to himself with satisfaction.

When he was finished with the last button near her neck, he trailed his hand down the middle of her chest, parting the shirt as he went. This time he watched his progress. Finally, at her hips he grasped her around the waist and drew his own waist to hers mocking what he would do to her in a few moments. As he did, Castle brought his lips to hers, kissing her softly. She smiled warmly at him.

He unclasped her belt in one swift motion and unbuttoned her pants. Beckett inhaled sharply with anticipation. Her fingers were getting tired of holding onto the shelf but when Castle's jeans suddenly hit the cement floor, a new wave of excitement hit her.

Without any warning, Castle pulled off her pants abruptly and gripped the back of Beckett's thighs lifting her onto his lap. He was ready and so was she. He moved her panties to the side, and plunged into her with zeal. Her gasp was louder than she anticipated. She hated herself a little for the momentary loss of control. She wouldn't let it happen again. Her moans were subdued but no less powerful. Each thrust threw her into a new wave of ecstasy. With Castle thrusting up into her and Beckett continuing to grip the shelf above her, the entire row of grey shelving was creaking and groaning along with them.

Beckett felt herself quicken, she was panting again. "Oh, Castle!" she moaned trying to stay quiet. With renewed vigor, Castle's pace quickened, finding his rhythm and hers. They rose together and finally with one final thrust, they found their release together.

Castle slumped against Beckett and she dropped her now sore arms to Castle's shoulders, wrapping herself around him. He carried her down to the floor with him then cradled her in his lap as she rested her head in the crook of his neck. Her eyes closed, the only sign of her exhaustion.

"Best black out ever," She breathed.

He chuckled and wrapped his arms around her tighter.