As their working relationship continues to deteriorate, Castle and Beckett must chase a serial killer targeting the city's billionaires. Set late in S4, after Headhunters and The Limey. [Castle Summer Hiatus 2015 Ficathon Entry]

3x14, the little black dress.

Mission: Surveillance. Subject: Richard Castle. Transcripts from 27 Feb, 2009. [Castle Summer Hiatus 2015 Ficathon Entry] See my author page for new M!rated companion to Ch 81. Now complete.

This is not a place where St Nicholas would distribute presents, though it might be where his demons let off steam. Danger abounds here: hot, heavy and welcome. This is a club where dreams can come true. Of course, dreams should only be a one-time experience... See CH1&3 A/N for Warnings Before Reading and note M-rating. Castle belongs to ABC/Marlowe.

After two more close calls and the beginning of a confession, Kate can't deny her feelings for Castle any longer. Still, diving into something new with her best friend and partner isn't as easy at she'd like it to be. This is a journey through the end of season three and how the C/B relationship might have developed if Kate had broken up with Josh after Countdown.

Set after episode 3x22 "To Live and Die in LA", what if our favorite mystery writer and his detective muse got together while they were out in the city of angels when they were getting justice for Mike Royce. How different would things be for them? Starts off at the end of May and moves onward. A reposting of a previously published fanfiction. #Always

What if Castle had called Beckett that summer? Set between seasons 3 and 4.

'New York was bracing for a hurricane and Kate Beckett was terribly ill prepared. But she was even less prepared to see Richard Castle again after a summer of silence.' Set late in the summer, post season 2.

This is story starts at the season finale of season 2. The rest will be what could have happened. I don't own any of these characters or stories. This is my first fanfic so please be kind with the comments!

Castle and Beckett's Forbidden Planet evening. Post Law and Murder. Will become AU. Idea from castlefanficprompts on tumblr.

"So, what? You just couldn't handle my attention being on someone else so you had to go out of your way to sabotage my chance with a nice guy?" An AU take on Den of Thieves in which Castle tells Demming that he and Kate do actually have something going on.

2x18 AU. After Beckett lives, Dunn decides he has to kill again, going after one of the few people who were truly important to her even if she denies it. Castle.

This is what she dreamed of for a whole year. But now? Now it makes her miserable. :: A season 3 AU.

"Kate. Come have dinner with me instead." :: An alternate ending to 'The Final Nail' spun-off from a castlefanficprompts post

"Stick around for next year, Beckett. You can be Pocahontas," he teases, nudging her with his elbow. "Not even in your dreams, Castle." An AU Thanksgiving oneshot set post 2x18 (Boom!)

Four years can make a world of difference. AU.

For months she's been gone. Months in which Castle's been forced to believe that Kate Beckett was dead. Eight full months in which he's missed her, craved her, mourned her. Now she's standing on his doorstep, two coffees in slightly shaking hands and Castle's world collapses. Direct spoilers for 4x23 Always, but most probably AU from there.

Kate Beckett was twenty-six when the biggest accident in her life occurred. Five years later, the biggest miracle happens. AU.

Set after the events of Season 2's "Tick, Tick, Tick/Boom" arc. What if Kate had stayed with the Castles for longer than we saw on the show?

Will romance spark between a writer and a detective at a night dedicated to her mother's memory?