So this was supposed to be up earlier but I was on a split shift at work, go me! So here's the next part. Next chapter I believe will be the last.

Kate sat on the couch and was waiting for Alexis to get home from school and Rick was sitting in his study hit by inspiration writing out a chapter. They had come home since they couldn't get any further on the case until Michael came in for questioning early the next morning.

Since Alexis had an after school club it gave Kate the chance to figure out what to say to Alexis, but that didn't help since she couldn't think straight. So instead of sitting around thinking she got up and made a cup of tea, as she was pouring the water Alexis walked through the door.

"Hey Kate I wasn't expecting you back so early." Alexis said surprised at seeing her there.

"We can't get any further until we speak to someone tomorrow so we were sent home." Kate explained.

"Where's dad?" Alexis asked looking around.

"He was hit with inspiration apparently so he's in his study."

"Oh right."

"Would you like a drink?"

"Yes please."

Alexis put her bag at the bottom of the stairs and went to sit on the couch. Her arm was healing well and instead of a white cast it was now multicoloured from everyone who had signed it. Kate walked in and sat on the other end of the couch facing Alexis she handed her a cup and bought her own to her lips blowing it to cool it down.

"So what's the case?" Alexis asked.

"A boy called Luke was murdered." Kate said sadly. "He was ten."

"That's awful. Do you have any idea who did it?"

"Well everything is pointing at the dad since he was the last one with him."

"Have you questioned him?"

"No he was on a business trip so we have to wait until tomorrow morning."

"What about the mother?"

"She hasn't seen him since last week they were divorced."

"That's sad."

"Yeah."

They sat in silence for a few more minutes before Kate looked to Alexis.

"Alexis?"

She looked up. "Yeah?"

"I have something I want to give you and now seems like a good time."

"Kate you don't have to give me anything." Alexis told her.

"I know I don't but I want to."

Kate reached beside her and pulled the box that sat on the table, she placed her cup on the table and then stared at Alexis.

"This was given to me before I left for college." Kate began. "Before that it was my mom's and my grandmother's."

Alexis looked at her unsure of what to say. Kate opened the box and then turned it so Alexis could see.

"Kate." She said a little breathless. "I can't take this."

"Why not?"

"Because it's something that belongs in your family and well you should keep it until Johanna is going to college."

"Alexis I want you to have it. I have a few keepsakes and I want you to have one."

She reached for the box so she could look closer at the necklace. "Are you sure?"

"Alexis I consider you my daughter already. My mom told me that no matter where I was in the world and no matter where she was she would always be with me."

Alexis slowly traced the cross with her finger. "It's great." She said smiling at Kate. "Thank you." She reached over and with her uninjured arm gave her a hug.

Kate and Rick sat at her desk she had decided to come in early again since she wanted to be prepared for when Michael came in. Everything was telling her that he did it, but she had a feeling that he was going to sit there and lie to him.

Ryan was in at nine and Esposito walked in a few minutes after with a smile on his face. Kate and Rick looked at him and watched him as he headed for his desk.

"Someone get lucky last night?" Rick asked.

"No…well yes…well…" He looked at them and started to mix his words up. So he eventually just settled with, "Shut up guys."

They all laughed at him when the elevator signalled the arrival of someone on the floor. They all turned to see a man in his mid thirties walking towards them.

"Who's Detective Beckett?" He asked obvious anger in his voice.

"Me." Kate said looking at him.

"I hope this is important do you know what the business deal I was doing worth?"

"Well since we couldn't get in touch with you, you obviously don't know what has happened." Kate said.

"Well how about you fill me in?"

"Where's your son?"

"He is with my parents."

"How sure are you of that?"

"I dropped him off myself Detective I think I should know."

"Well we found your son murdered yesterday."

"What?" He calmed immediately and looked at her.

In all the people she had watched Kate had never seen someone more surprised by the news.

"I'd like to ask you a few questions."

"Sure." He agreed.

Kate led him into an interrogation room with Rick following them both. They sat at the table and looked at each other.

"So what time did you leave for your trip yesterday?"

He tried to think. "I don't know about half ten."

"Okay so can you explain what you did before you left?"

"I got up and made breakfast, packed some clothes for Luke to take with him. I dropped him off at about eleven before going to the airport."

"Did anything strange happen?"

"No." Michael said shaking his head. "Apart from Claire coming and banging on the door, probably causing arguments with my neighbours."

"Why did you tell her she couldn't have Luke?"

"He said he didn't want to stay with her, I asked him why but he wouldn't tell me."

"But he stayed with her last weekend so what changed?"

"I don't know." He shook his head. "I just want you to find out who murdered my son."

Kate stood up and walked out to see Ryan and Esposito at their desks.

"Hey Beckett!" Ryan shouted.

"Yes?"

"He said that he took Luke with him right?"

"Yes?" She said unsure of where this was going.

"Well he got in the elevator without him."

"What?" She walked up to the screen and watched as he did indeed get onto the elevator without Luke. He looked a little jumpy as he stood with his hands in his pockets one minute and then ran a hand through his hair the next.

Kate turned and headed back into the room, she looked at Michael before heading to sit back down.

"What really happened Michael?"

"What do you mean?" He said.

"We have a video of you getting on the elevator like you said. Only Luke wasn't with you like you said."

"It wasn't my fault." Michael said.

"What happened?" She asked again.

"Luke, he liked to touch things. Well when I was making breakfast he reached onto a high shelf and something fell on him hitting him hard on the head. I didn't know what to do and so I panicked, I figured I'd deal with it after my trip you know? I was stupid."

"So you left him for the cleaner to find?"

"I thought I'd told her not to come, it wasn't my fault."

Kate looked at him, she thought it would take more to make him break down but it didn't. She stood up and walked out the room along with Rick.

"We got him." She told the boys once she had closed the door.

"Makes you wonder about these people who kill their children." Esposito said sadly.

"Yeah."

Ryan called to get someone to take Michael away and Kate went to sit at her desk while Rick went to talk with Esposito about a poker night. As Kate sat at her desk she froze and then looked up to Rick.

"Rick?" She called.

He looked to her. "Yes?"

"I don't want you to worry-" She began. "But I think my water's just broke."

He immediately ran over to her. "What! Are you serious?"

"What did I just say?" She said looking at him.

"Okay don't panic." He said talking to himself. "Right I can do this. What if you're not ready?"

"Castle look at me."

He looked at her and she took a deep breath. "Right now I have to get to a hospital once I'm there you can panic all you want."

"Okay, right. Let's go."

"You want us to come with you?" Esposito asked.

"Get Michael taken in and then tell Montgomery. Also phone Claire and tell her what happened." Kate said standing up.

"Okay, want us to phone Alexis' school or Martha or your dad?"

"No, we'll do that."

"Okay less talking more moving." Rick said as he pushed her shoulders towards the door.