AU. On January 9th, 1999, Castle saves Johanna Beckett from being murdered. His act of bravery sparks a complicated love with her daughter, and a totally different life and career path for Kate Beckett. Because although Johanna lived, someone out there still wants her dead, and as the years go by, Kate Beckett and Richard Castle are determined to find out who.

In order to pay off her family debts, Katherine Beckett volunteers to work at the royal castle. However, she gets more than she bargained for when she meets the prince. AU Thanks to Emma for the awesome cover art.

Snippets of the converging lives of Emily Prentiss and Aaron Hotchner. AU backstory.

'He hadn't come expecting to find anyone interesting, he never does when he ends up in one of these clubs, but the requirement of masks, the promise of unknown identities and costumed anonymity for a night had appealed to him.' An AU meeting on Halloween night. Entry for the #CastleHalloweenBash.

Young Kate Beckett had looked for a night to forget only to find it turned into one she would remember for the rest of her life. AU

"What was his problem? Did he have no sense of justice or morals whatsoever? He just let a killer free and all he could think about was boobs." An AU Castle/Beckett story.

It floats across her mind, her history. Her past. The reasons why she is what she is and why she can no longer be who she was. Why Kate Beckett disappeared and Lone Vengeance was born. AU.

This green-eyed woman took a bullet for Mal Reynolds before he ever learned her name. Kate Beckett becomes a character in the 'verse. Mackett.

AU-Here he is, about to get married, and there's only one woman on his mind: his Bride...right?

AU: Beckett is a uniform on the Vice squad at the 12th, five years before she and Castle actually meet in the show. Based on an idea of Cartographical - chezchuckles and I just liked it so much that we each wrote our own. Variations on the same theme, sort of.

AU: Beckett is a uniform on the Vice squad at the 12th. It's five years before the season one meeting. Cartographical sent me and Sandiane Carter a list of AUs she wanted to see. We were both so excited about Vice Beckett that we each wrote our own. This is mine. Thanks to garnetgivealittlelove for the cover art.

Sparks fly and unexpected fires start when an undercover cop and a researching novelist spy each other from across the room. AU. One-shot. Please don't be put off by the rating; it's tasteful... enough.

His chest heaves beneath her, staccato gasps echoing in the darkness of his room. Post-Always. Complete.

AU. What happens when two people, who are perfect for each other, meet in exactly the right place at the completely wrong time? For literature professor Katherine Beckett and writer Richard Castle, only time will tell. COMPLETE.

What if Castle had met Beckett at college? Would they have still wasted so much time dancing around each other? Think 'Veronica Mars' style crime fighting. Think Caskett. Think love and friendship and drama and life.

AU: carolina17 had this idea: What if Kate's mother was never murdered but her father was instead? This Kate Beckett never went to the police academy, grew up under the shadow of her mother's ambition, and has her own wall to deal with. COMPLETE

When Kate Beckett went to get her book signed by Richard Castle, she never imagined that she'd end up meeting his daughter, much less offering to babysit for the afternoon. AU.

Castle has a plan to take down that wall. After three days, love will rise again. SPOILERS: season 4 premiere. by Sandiane Carter and chezchuckles. COMPLETE

"She had told him that wall was there, and he had promised that they would figure it out and that it wouldn't always be there; she had never said she wouldn't help him break it down". Kate finds a way to give back. Lots o'fluff.

A year after S3 Finale, Kate Beckett and Richard Castle finally host the Johanna Beckett Memorial Fund Silent Auction. Almost fully healed, two months into desk duty, Kate admits to herself there's something more she wants. For carolina17. COMPLETE