Kate walked into the loft early that evening. The case had no new leads, and Ryan was finishing up pulling the victims phone records. There was no point in sticking around, and because Gates was out of the office today, they all left early. Right away, walking into the loft, she set down her purse, noticing a woman's jacket that belonged to neither her, nor Martha. The jacket was made from high end material, and it looked designer. Kate kicked off her heels, and walked to Castle's room. No one was present.

"Castle?" Kate called.

There was no response, but Kate heard what seemed like arguing coming from upstairs. She wondered why she hadn't noticed it before, but she disregarded that and cautiously walked up the stairs.

"Castle?" Kate called again.

The arguing stopped and Kate thought she heard Castle say, "I have to go. So do you."

Castle came out of the second room on the right and immediately smiled when he saw her. Kate was stopped on the stairs, as he walked towards her.

"What was that? It sounded like you were arguing with someone." Kate said.

"Oh that…Meredith's in town." Castle responded, moving in for a kiss.

Kate avoided it, ending up with Castles lips by her neck, which he took advantage of.

"Don't worry, nothing is going on between me and her." He reassured her.

"Then why is she here?"

"She wanted to take Alexis to Europe." He answered, still trying to get his kiss.

"And you don't want her to go?" Kate asked.

"It's not me, Alexis is sick and Meredith feels like it's her job as her mother to stay and take care of her." He responded.

"She's never been there for Alexis before. It seems to me like she's just trying to sleep with you again."

"She already tried. I turned her away of course." He smiled and backed away slightly, seeing his endeavor was useless.

"Good choice, because I have a gun, and you have no choice."

"I love it when you go all bad cop on me." He whispered.

"Save it for later, I'm going to go talk to Meredith." Kate walked past him.

He grabbed her arm, "Kate, are you sure that's a good idea?"

"Why not?"

"Well, Meredith has her way of doing things, and most of the time; she'll do anything for the odds to work out in her favor." Castle responded, letting her go.

"I'll be just fine." Kate said, beginning to walk away again.

"Don't believe a word she says!" Castle silently yelled after her, cursing under his breath, fearing what could possibly come next.

"Meredith?" Kate asked, knocking on the door.

"Come in." she responded.

Kate walked in, seeing her boyfriend's ex-wife sitting on the floor next to the bed, mascara running.

"Kate! Longtime no see! Do you know why Richard refused to sleep with me? He said something about being in a relationship. Then told me I was a bad mother and to go home." She complained.

"I don't think you're a bad mother," Kate lied, "I think he just meant that you haven't been around much for Alexis."

"I've been too busy." She snapped.

"For your own daughter?" Kate asked.

Meredith was either a better actress than Rick thought, or she was really going to start crying. She finally responded, "Alexis needs me now."

"Meredith, Alexis needed you for the past 18 years. She's grown up now. She has me and Rick." Kate softly responded to her statement.

"Are you saying you're replacing me?" Meredith almost yelled.

"No, of course not, it's just, we don't need you here. Alexis has been sick before with just Castle around. Now, she has two people who love her around."

"Fine, I'm going to stick around though." Meredith continued to unpack.

"Why?" Kate asked.

"Because, my flight back to L.A is not until Monday!"

"Oh, great!" Kate said sarcastically, "A whole 3 days."

"Isn't it great?" Meredith asked, and Kate smiled in response.

Meredith went over a hugged her, which was a surprise. "Good to see you detective." She said backing away.

Confused, Kate left the room.

Castle was in the kitchen, stirring the pot of chicken soup when Kate walked in.

"How'd it go?" Castle asked, putting the top on the pot and walking over to her, taking her in a welcoming embrace.

"She's a piece of work." Kate said.

"Tell me about it, is she leaving?"

"Not until Monday, that's when her flight is."

Castle groaned, "Get ready for hell."

"Why, I don't live here." Kate smiled.

"Oh come on Kate! Stay! Don't leave me alone!"

"You're going to burn your soup." Kate ignored his pleas.

"Think about it this way!" Castle started walking from his soup back to Kate, "Stay for Alexis. Please Kate. Don't leave us alone with her."

"Fine, but you owe me Castle." Kate agreed.

"Your wish is my command." Castle replied, finally moving in and getting his kiss.

Both of them thought about the weekend ahead, and what kind of hell they were getting themselves into.