"Who is Kate Beckett?" The question kept reverberating through her as she entered the 12th precinct.

Luckily she hadn't had to give her psychiatrist an answer when he asked her. He had given her a reprieve and told her to think on the question and give him an answer in their next session.

Who is Kate Beckett?

She was still deep in thought as she made her way to her desk. Placing her purse in her desk drawer, she looked to her left and noticed the chair beside her empty. The absence of Richard Castle in the precinct bothered her more then she cared to admit.

Where was he? Sure she was late coming in this morning, but she half expected Castle to be waiting at the door for her, asking why she was late.

Kate had just settled in at her desk and turned on her computer when a large paper cup came into her eye sight. She could feel a smile spreading across her face. There he is she said to herself.

"Espisito said you were coming in late, so I ran some errands and came back with more coffee," Castle informed her. "The other cup got cold waiting for you." He sounded like a little boy upset that Mommy wasn't on time to pick him up from school.

"Sorry, Castle," she looked up at him and smiled. "I had an errand myself this morning. I didn't know I needed to check in."

"No problem," Castle said as he plopped down in his chair.

Kate shook her head. That damn chair. Castle should have a plaque on it, because no matter who else sits in it, she believed it would always belong to Castle.

"This place is dead," he said with a chuckle. "Pun intended," he said leaning into her and giving her a wink.

"Yeah, it has been pretty quiet," Kate said as she opened a file. There was always paperwork to do even if they were case-less. "Sorry we don't have a juicy case for you."

"It's okay," Castle conceded as he rose from his chair. "It's just as well, I really should be writing."

"You're leaving," Kate said with a hint of regret in her voice.

"Why Katherine Beckett, if I didn't know any better, I would say you want me to stick around here with you," Castle told her. He picked up his jacket on the chair and slipped it on. "As much as I would love that, I have Nikki Heat calling me and an ex-wife editor riding me to finish it."

"I understand," Beckett said as she looked up at him. "When Nikki Heat calls you come running,"

"No," Castle shook his head. "Nikki answers to me and I come when you call."

Kate dipped her head and tried to hide the heat rising into her face.

"So, what is Nikki up to these days?" Yes, Kate admitted it. She was asking the question to keep Castle here with her just a little bit longer.

"Well, that would be a spoiler, and you know I don't do spoilers," Castle tossed her one of his famous devilish grin. "Plus, if it got out, Gina would kill me."

"Who am I going to tell," Kate said getting a little miffed he wouldn't tell her. "After all, you have said from the beginning Nikki is me, so it is like telling me what I am up to."

Castle kicked up a grin and shook his head at Kate's logic. "Fine, I will whisper it to you." He leaned down to her ear. Kate could feel his breath on her neck. And then he whispered something that rocked her to her very core.

Three little words about Nikki Heat had her mind reeling.

"Really," Kate said with a shocked expression. "You are going there."

"Already there," Castle said as he backed away. "Imagine how that can change the whole perspective of a character."

"Yeah," Kate simply nodded. "It would."

"I'll talk to you soon, Detective Beckett," Castle told her as he backed away. "Call me if a body drops." With that and his little Nikki Heat bombshell, Castle left the 12th and Kate Beckett speechless.

Who is Kate Beckett? The question bubbled up again. Who is Kate Beckett and why did Richard Castle just make Nikki Heat pregnant?