Hey everyone! I just wanted to thank all of you who are reading this story. It's my first fanfiction, so I'm sort of nervous but it's really great knowing you're reading this story and hopefully enjoying it. Anyway, reviews are very welcome. I'd love to hear your opinion and if anyone has some advice for me, please let me know!

'Yes Alexis, I'll be fine. There's food in the fridge and enough ice cream to keep me happy. Yes, yes, I promise I won't do any experiments without your supervision. Don't worry; just enjoy yourself okay? I love you! Bye sweetie.'

Castle smiled as he put his phone on the table. Alexis was always so caring and sweet. Always worrying about him. She was out of town for a week with her friends, it had taken him some time to convince her to leave her schoolwork behind, but in the end she had agreed and was having a great time.

Castle walked to the kitchen to get himself some coffee. The apartment was disturbingly quiet; between Alexis being gone and his mother's trip with her acting class he had the house to himself for one whole week. He took a sip from his coffee and sighed as he realised his newfound privacy probably meant he should get some writing done, but he just wasn't in the right mood. Maybe it was the last case they had. He had felt sorry for Beckett - he could see how much it had hurt her to bring the family the awful news. He wished he could've done more for her than just try to lighten her mood with his silly jokes. Maybe he should call her or just go over to her apartment and bring some movies and some Chinese food. Writing could wait, he decided. He was about to get his jacket when he heard a knock on the door. His brow furrowed with confusion. He wasn't expecting anyone. Maybe Beckett had the same idea and had decided to come over? After all, their minds did work in sync most of the time. But she probably would've called instead of just coming over; she hated to intrude upon his quality time with Alexis and with this last case he hadn't had the time to tell her about Alexis' week off. It was probably a crazy fan who had managed to get through the lobby and past Castle's trusted doorman to his apartment. It wouldn't be the first time. With a sigh he walked to the door - he could manage one fan, right? He just had to sign something and then he could go to Beckett. Still deep in thought, Castle opened the door.

And just kept staring. This was not some crazy fan. At least he hoped not. Castle was looking at a young and, if he had to be honest, quite handsome guy. His hair was black and a little messed up. He was wearing a leather jacket and Castle realised he was completely dressed in black. The smile on the guys face was more of smirk than an honest smile.

'Can I help you?'

Castle managed to utter. This was not what he expected. The guys didn't answer but just entered his house.

'Excuse me, did I host a poker night and forgot about it? I'm sorry it happened before but I just have a very chaotic mind, I guess it comes with the writer job.'

The man in didn't answer and just looked around in Castle's apartment. After a while he whistled.

'Nice place' He smiled. 'I could definitely get used to this.'

Castles confusion couldn't get worse than it was at this moment. Who was this guy? Still a little bit in shock, he finally closed the door and walked up to the man.

'Excuse me, but what are you doing here?' When the man didn't respond, Castle adopted his best intimidating voice. 'This is my house and I think it's time for you to leave.'

The guy just looked at him with a hint of a smile. Castle fidgeted with his hands and tried to look tougher than he felt, which was kind of hard because, seriously, the guy was pretty creepy.

'Look, buddy, I'm serious. Why don't you just leave and then we can all have a nice evening without any trouble?'

The guy let himself fall on the couch. It looked like he belonged there, like he had lived in the house for years. He had one arm underneath his head and was looking at Castle.

'Who says I don't want any trouble?' He smirked once again, but this time it was threatening.

'That's it, I'm not asking you again. Leave or I will have to call the police.'

The guy laughed out loud and got up. He walked very relaxed over to the kitchen and began rummaging through the cupboards. Castle slowly made his way over to the table where he had put his phone after his conversation with Alexis.

'I wouldn't do that if I were you.'

Castle yanked his hand away. This was seriously eerie; the guy hadn't even moved and still had his back towards Castle. How did he do that?

The guy triumphantly pulled a wineglass out of one of the cupboards.

'Want some?'

This was outrageous. The guy acted like he owned the place, and now he was offering Castle some of his own wine? This had to end.

'No thank you.' He answered, his anger building up. Once again he tried to get a hold of his phone on the table. Meanwhile the guy had found Castle's wine stash and was opening a bottle of wine from a very good year. Castle groaned. That wine had cost him a fortune. He waited till the guy had his back to him again and then tried to take the phone.

'What did I tell you? Don't do it.' The guy said in a singing voice. Then he turned around with a filled wine glass. 'I knew you were stubborn but can't you listen just one time?'

Castle's brow furrowed at the statement. 'What do you mean: "I knew you were stubborn"? Who are you? How do you know me?'

The guy shook his head. 'You know, for a writer you're pretty stupid. You're Richard Castle, the crime novelist. You're famous Rick, you're picture is in every bookshop and every newspaper, ergo….'

Castle decided to ignore the fact that the guy had just called him Rick like they were old friends or something.

'You know what I mean. What do you mean you knew I was stubborn? I've never seen you before and yet you claim to know things about me that are not just in newspapers.' The guy ignored Castle and simply continued to sip on his wine. 'Come on, if you're planning on staying you might as well tell me something'

The guy held up his glass and winked. 'You're right. I do know you from more than just newspapers. As a matter of fact, I know quite a lot about you. Your daughter for example – Alexis, is it? Ooh, talk about hot.'

'That's it.' Castle snapped. This guy was crossing the line. Barging into his house and drinking his pricey wine was one thing, but talking about his daughter in that way was completely something else! 'Get out now!''

The guy put his glass down on the table and walked away. 'Okay whatever you say.' He put his hands in the air. 'I just came here to warn you but, hey, it's your funeral.'

Castle followed him to the door. 'Wait, wait, wait, what do you mean?

The guy slowly turned around again with a slow smile. 'Well I'm just saying, shadowing detective Beckett might get a little dangerous. I would just quit if I were you. Oh wait, you can't. You need her for your little books, don't you?'

Castle frowned. 'Yes, following her around helps me with my inspiration.'

'Oh is that what you call it. Don't worry, your secret is safe with me.' The guy whispered over-dramatically, as if he and Castle were in on a scandalous secret.

'There is nothing going on between Detective Beckett and me. We're just friends.'

'Right...' The guy stretched the word out. 'Well then it won't be a problem to stop following her like a lost puppy, will it?'

He opened the door and made his way out of the house. Just before he closed the door he peaked his head back in.

'If Alexis gets lonely, tell her to call me.' He winked and closed the door before Castle could shut it in his pretty face.

So, what did you guys think? I need your opinion, do you think Beckett should tell Castle who Damon really is or do you think he needs to figure it out by himself?