Just another little one-shot

Disclaimer: does not own Castle.

"RICHARD CASTLE!" Detective Kate Beckett yelled, storming into the central hub of the 12th precinct police department. A few heads swiveled towards her and quickly turned away at the thunderous look in her eyes.

Making her way towards her desk she saw her husband come to an abrupt stop from spinning in her chair.

"Yes, dear?" He asked, shrinking away from her angry glare.

"Out of my chair. Now!" She barked, grabbing his ear and yanking him to a standing position.

"Ouch! Apples, apples! Jeez, Beckett, don't you remember your vows? What's yours is mine!" He grumbled trying to pull his head away from her death grip. Pulling harder, she led him into one of the interrogation rooms and slammed the door shut. He quickly sat down before she could yell at him to do so.

"Where's Riley?" She asked, talking about their four month old son.

"Ryan and Esposito took him to see Lanie." Castle mutters, eyeing her wearily as she stalked around the room. Kate had dropped him and their son at the precinct for a few hours so she could go have her post baby check up in peace and also so Lanie, the boys and Montgomery could coo over Riley. She had been fine a few hours ago but now, not so much, it seemed. She chewed her lip like she always did when worried or confused.

"Kate, what's going on? Is everything ok?" Castle couldn't stop the concern from creeping into his words. Kate sighed and sat down across from him.

"I blame you for this, just to be clear." She started. Castle nodded, used to hearing those words.

"Tell me something I don't know!" He joked, trying to lighten the mood. Unfortunately, it garnered the opposite reaction and her temper overflowed. She stood, slamming her hands on the table.

"Tell you something you don't know! I'll tell you a dozen things, Richard. You don't know how to control yourself! You don't know how to use protection! You don't know how to listen to me! You-"

Castle cut her off, standing up and matching her pose. He barked her name, causing her to stiffen and glare, but her mouth quickly closed.

"As much as I like games, Kate, I want you to stop talking in riddles and tell me what's going on."

Her anger deflating, Kate sat back down and motioned for her husband to do the same. He did, but he dragged his chair around to her side of the table and grasped her hands in his. Kate began talking softly.

"During my check-up with Doctor Irving she asked how I'd been feeling. I told her I'd been tired a lot lately and feeling a bit…off…but that I thought it was just because of being up every few hours with the baby."

Castle nodded in understanding, their son had no sleeping pattern whatsoever, so he and Kate had been living off minimal hours of sleep the past four months. Seeing their gorgeous son gurgle and coo at them was worth the sleepless nights though.

"Anyway, she wanted to be sure everything was ok, so she ran a few blood tests."

Castle sat up straighter, a worried look on his face.

"Kate..."

"I'm pregnant. Three months." She blurted, slumping back in her chair. Castle's mouth opened and closed like a goldfish. He wasn't sure whether to be happy it was nothing life threatening or shocked because this certainly was not planned.

"But…we…I mean…" He didn't know where to start.

"It would've been the first time…after I had Riley." Kate said, watching as realization dawned on Castle as to why she was angry at him. Once Kate had received the all clear from her doctor to be able to resume 'sexual relations' after the birth of their son, Castle had insisted on waiting no longer than it took them to get back to the loft, where he had promptly taken her against the front door, Kate's muffled protests against his mouth about protection be damned. Obviously since then they had been completely careful.

"Doctor Irving said my due date is November 25th."

Castle does the math quickly in his head, and almost chuckle's when he realizes Riley was born on January 17th of this year, and the next child would be born late November of the same year. He's more than certain Kate will punish him for the rest of his life for making her give birth twice in one year.

"I see. Well, I certainly take full responsibility for this..." He murmurs, glancing at her face. She's smirking now, and her eyes have an evil glint to them. Castle's Adams apple bobbles as he gulps nervously.

"I'm glad to hear that, kitten. If you thought I was hormonal when I was pregnant with Riley…it's going to be double the fun for you this time. Come Christmas, you're going to have the responsibility of twins. Congratulations, Daddy." With that, she stands, pats his cheek gently and walks out, most likely towards Lanie's office. Castle sits there, stock still, unable to comprehend the bombshell she just catapulted in his direction. The only thoughts that cross his mind are that by Christmas he will have three babies under the age of one. And he will definitely not be getting any sex for the next 18 years.