A/N: Well. This is it. The end.

I'm still kind of upset that I couldn't get 10 reviews for one chapter but I decided not to hold out on this. This is for Kathinka, LiseCate, Christy811, newyorker1994, theNCISlovinggingerguineapig , theputz913, Guest, Twyger, Scoutieout and everyone else who has review this story. Thank you so much to everyone who has been reading this, whether that's from the start or halfway through. Thank you all.

For those of you who can't read an authors note and keep asking, I have said it time and time again, there will be a sequel, just not right now.

On with the story now, for the final chapter. Here's to you. Enjoy.

Disclaimer in chapter one.

Kate,

Well, this thing is almost over. Finally. I don't know about you but I have been counting down the days; I should be catching the plane tomorrow night and getting back to New York, and more importantly you, the day after.

I've loved writing these letters, getting to relive all those little moments that have lead us up to this point, that make up the foundations of us. Everything we are, that we do, we want, believe, dream, know, everything between us is new and exciting and I want to capture it all. To write it down and take a photograph and keep these memories forever.

I love you.

I'm fairly sure I've made that clear by now, there's not a day that goes by where I don't at least tell you once. I try and show it you in everything we do. Kate, all the songs make sense. I know that I have to let you do things yourself, to come to your own conclusions, I can't rush you into anything. I've waited for four years, by your side, watching and waiting for this. If I can wait that long for you to notice me then I think I can keep on waiting for you, for the rest of my days, I'll do anything for you. We'll fight that fight, paint that fence, move that rubber tree plant, all of it for you. Whatever it takes to keep you feeling as happy as I am, knowing that you love me.

I would conquer the world just to see you smile.

'Z' is a hard one, I won't lie. One of the three most uncommon letters in the English alphabet. I'm not going to cheat with this like I did with 'X', instead I'm going to do something different.

I'm going to say goodbye.

I'm going to say hello.

I'm going to make a fresh start and I want it with you. We will always have our history, it's what shapes and defines us. Molds us into a childish writer and a scarred cop. We can't change that, no one can. But we can move forward.

I'm not quite sure what tense to use in this sort of situation Kate, so you'll have to forgive me. I sent this letter to the precinct because this is where we grew, we met, laughed, fought. It's the place where I got to spend time with you, learning your secrets, finding your weaknesses and watching you turn them into strengths. If there hasn't been some gruesome murder you'll be sat at you desk, reading this while pretending to do paperwork while Ryan and Esposito laugh in the background as you fail to be as inconspicuous as you think you're being. There'll be a Starbucks coffee cup on your desk because I'm not there to make you one using the coffee machine in the break room, the same machine that I've taught you how to use a thousand times now. I know you know how to use it, I just think you like it when I bring you coffee, makes it that little bit more special and you reward me with that small smile that you try and hide behind your cup.

You'll be sat there, twirling your chair ever so slightly and pulling the heel of your foot out of your shoes and putting it back in repeatedly. You'll be biting your lip and fiddling with a pen and as adorable as you look I'm going to have to ask you to stop it. If everything I've said is true - and I know it will be because I know you so well - then you'll be pulling that cute little half angry, half confused face, the one where you scrunch your eyebrows together and your bottom lip juts out every so slightly.

I have a much better idea than writing a letter about the letter 'Z', instead of using words as I'm so used to I'm going to use action. Something that's thrilling me and terrifying me at the same time here.

I know that you wanted to keep us a secret but, Kate, I can't. I love you and I've missed you and, honestly, I think everyone knows already.

Now I know how insanely stubborn you are because I'm the same but I'm going to have to ask you turn to turn around. I know you wont until you've finished reading this letter and maybe that is for the best because I might ave a little surprise for you.

Kate, I know that you're in the middle of the precinct but I can't wait any longer. I'm going to kiss you, I'm going to make you understand how much I want and need you in my life. Dammit, Kate, I love you. And I can see those wheels in your head turning. I managed to get out of my tour early.

I'm standing right behind you.

And you probably wont read this until later because knowing you, you'll have thrown yourself at me and blushed as we made our exit while everyone around us cheered and yelled about it taking us long enough but I just thought I should let you know this one last thing.

You look really hot today.

Always.

Richard Castle.