Disclaimer I do not own Bones or Castle. No copyright infringement intended. Very slight crossover with Bones.

I Hear Talk?

"Oh boy." Ryan raised his eyebrows as Gates stormed past, looking far too pleased with herself for anything good to happen. Esposito smiled, knowing his best friend and parter was slightly scared of the new Captain.

"What?"

"Have you seen Beckett and Castle?"

"No." Ryan looked around. The chair behind him was as empty as when he had arrived this morning.

"They are never late."

"Yeah." Ryan sighed wondering exactly what had happened and why their boss was looking so pleased with herself.

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"This is ridiculous." Kate snapped as she walked into the large austere building. "I am a NYPD Homicide detective. I am not FBI."

"What harm can it do?" Castle smiled as she shot him a death glare. The Washington DC building was a hive of activity. The foyer was full of agents going about their daily business. He couldn't help but smile at the thought of being back in the capital again.

"Castle."

"Look, if it means Iron Gates is going to let us keep working together I can't see what harm it does. Look, there's this writer I know, Temperance Brennan."

"I have some of her books." Kate nodded.

"Well, she's a scientist of some sort. Works alongside an FBI agent. They were sent to see this guy. He's young but he's great."

"I just don't see how talking to some kid can help us be better partners." She pressed the lift button. "Or how we ended up being sent here."

"Gates said."

"I know what Gates said."

"Well, look." Castle sighed as the elevator pinged open. "You and me, we work well together. She sent us here so that we could tak to this Sweets guy without the rest of the department finding out. She thinks we will talk more openly when we're away from the Precint."

"That is the most ridiculous thing I have ever heard. The shrink back home has to keep anything said to him confidential." Kate jabbed the button for the third floor. Castle knew when to keep his mouth shut.

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"So." Sweets looked at a heavily pregnant Dr Brennan as she got to her feet.

"You will tell him that just because I am pregnant does not mean I have, in any way changed my opinion on the matter." She held his gaze. Sweets nodded.

"Of course. You believe marriage is an outdated and masoginistic institution." He smiled slightly.

"Thank you." Brennan smiled slightly. "I should go."

"Yeah, well I'll call by the Diner later. Look, don't worry. I have another appointment. A referral from out of area but I'll talk to Booth." He watched her leave wondering exactly what his newest partnership would involve.

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"Hey!" Castle called, instantly recognising the woman leaving Sweets' office. Kate frowned slightly, realising the woman was the author they had been talking about minutes earlier. She stopped in her tracks as Castle called her name.

"Richard Castle."

"Dr. Brennan." He smiled. Kate looked on, wondering when she had slipped into a parallel universe. "You look."

"Pregnant?"

"Yeah." He smiled as Brennan rested a hand on her swollen abdomen. "That's because I am. Read the new book."

"Yeah?"

"It's great." He beamed with pride. "Who's this?"

"Oh sorry. Dr Temperance Brennan, this is Detective Kate Beckett."

Kate held out a hand as Brennan raised an eyebrow.

"Nice to meet you Kate. Look, I have to get back to the Jeffersonian."

"Ok." Kate nodded, wondering what the look Brennan and Castle had shared really meant.

"You were with Sweets?" Castle asked.

"Yeah. I er, he's a friend. And he consults on some of Booth's and my cases."

"Right. He any good?" Kate asked, still skeptical over the young man's ability to be able to do his job.

"He's young. But don't let that fool you. Dr Sweets may practice what is essentially a soft science. I mean there is very little that can be replicated in trials and quantitive research in his area of expertise remains limited but he is very effective in what he does." Brennan smiled. "Look,I have to go. You should call by the Jeffersonian before you head back to New York."

"I will." Castle frowned, watching the brunette waddle away from them. Kate smiled.

"She meant Sweets is good."

Castle nodded, wondering what had happened to change the author's mind about motherhood. He shook his head as the door to an office just ahead opened. A young man with curly brown hair appeared adn looked directly at him.

"Mr Castle? Detective Beckett? You ready?"

"Ah." Castle swallowed hard, realising just how young their psychiatrist was.

"Yes." Kate smiled warmly but only Castle would know it wasn't genuine. "Let's get this over with."

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A/N Shall I go on?