87A World Without Color » by The Muse of Apollo
AU. Rick and Kate Castle have gone through a lot together since that cold January day that changed their lives forever. And it all started with a single glance.Castle, M, English, Romance & Angst, chapters: 6, words: 12k+, favs: 63, follows: 143, updated: 3/31 published: 6/26/2021, [Rick C., Kate B.] [Johanna B., Jim B.]
1k+
Then Came Love » by bingblot
Kate had never planned to see him again but now, she would have to see him. She had to see Castle, for the first time in weeks, and talk to him. Starting in the summer before S2 and then going AU from there.Castle, T, English, Romance & Friendship, chapters: 61, words: 339k+, favs: 267, follows: 381, updated: 11/4/2022 published: 6/25/2021
641TALES FROM THE CITADEL » by Swordwriter
First in a series of one shots. Beckett and Castle join with a team from the 14th. precinct to investigate a serial rapist-murderer. The female detective shows an interest in Castle and Beckett's green-eyed monster comes out to play.Castle, M, English, Drama & Romance, chapters: 45, words: 149k+, favs: 81, follows: 111, updated: 10/18/2022 published: 10/19/2014
259 Someone to Walk Beside » by skygirl55
Partners Kate Beckett and Richard Castle bond over their unhappiness with their respective marriages. Non-Soulmate-Soulmate-AU. For Castle Ficathon 2022Castle, T, English, Romance, chapters: 11, words: 52k+, favs: 88, follows: 116, updated: 6/11/2022 published: 5/7/2022, [Kate B., Rick C.]
352 Glow » by alwayswritewithcoffee
Rick Castle has six weeks to deliver a blockbuster manuscript or lose his book publisher. Fresh off a divorce and lacking both inspiration and Christmas cheer, he agrees to spend the holiday away from the city. Evergreen, Vermont, and its police chief, however, were not part of the plan...Castle, T, English, Romance & Friendship, chapters: 12, words: 90k+, favs: 125, follows: 175, updated: 2/1/2022 published: 12/2/2021, Rick C., Kate B.
10 Save the Date » by tiara733
Set in 7x06 "Time of Our Lives" parallel universe where Castle and Beckett had never met before, Beckett is captain, etc. Castle remembers an important date. Two-shot.Castle, M, English, Romance, chapters: 2, words: 5k+, favs: 29, follows: 18, 12/25/2021, Rick C., Kate B.
147Purloin » by CaskettFanaticNell
"It's not the first time he's seen her like this. Long bare legs sticking out from under the tail of his white button down." Re-Upload of the fic where Beckett steals Castle's shirts.Castle, T, English, Humor & Romance, chapters: 11, words: 12k+, favs: 80, follows: 81, updated: 8/24/2021 published: 4/22/2020, [Kate B., Rick C.]
1k+ Nothing Lost » by bingblot
"Montgomery was dead. Beckett would be devastated. It didn't matter that Castle hadn't seen her in almost two years. Right now, in the face of this loss, all he knew was this overwhelming concern, this need to make sure she was okay." An AU version of "Knockout."Castle, T, English, Romance & Hurt/Comfort, chapters: 52, words: 274k+, favs: 244, follows: 384, updated: 5/13/2021 published: 1/10/2020, Rick C., Kate B.
3k+ Second Chance » by imdoingthiswhy
Season 2 finale AU. Lanie sees the disaster happening as Castle leaves with Gina. She talks to Beckett, then goes behind Beckett's back to stage an intervention. Life, love, cases, crises, etc. follow.Castle, T, English, Romance & Family, chapters: 207, words: 973k+, favs: 455, follows: 570, updated: 12/8/2020 published: 8/20/2016
427Dragoons » by Swordwriter
Colonel Richard Rogers is commanding an infantry regiment in the Old West.Castle, M, English, chapters: 12, words: 47k+, favs: 25, follows: 38, updated: 9/8/2020 published: 5/3/2019, Rick C., Kate B.
123 How It Could Be With You » by ShutUpAndPull
I picked up a thing from s2 and dropped it into late s3. Caskett does the rest.Castle, T, English, Drama & Romance, chapters: 6, words: 11k+, favs: 81, follows: 108, updated: 9/2/2020 published: 8/25/2020, Rick C., Kate B., Martha R.
105Battle of the Brains » by WRTRD
Kate Beckett and her brain argue, as do Castle and his. Sometimes one wins, sometimes, the other, but it changes the course of various events in a number of episodes, sometimes in a minor way, sometimes in a major one. Begins after 1x04 ("Hell Hath No Fury") and will continue into S5. Castle Ficathon 2020.Castle, T, English, Humor & Romance, chapters: 3, words: 9k+, favs: 43, follows: 72, updated: 7/25/2020 published: 7/2/2020, Rick C., Kate B.
376 Don't Give Up On Me » by skygirl55
When Richard Castle meets lawyer Kate Beckett on the subway he has no idea how she might change his life-and help him deal with his dark past. Caskett AU. For Castle Ficathon 2020Castle, T, English, Romance, chapters: 15, words: 44k+, favs: 156, follows: 198, updated: 7/5/2020 published: 5/14/2020, [Kate B., Rick C.]
1k+With A Twist » by Dmarx
A collection of unrelated one-shots exploring various 'what if' scenarios. #25: What if… Castle and Beckett hooked up at Ryan & Jenny's wedding?Castle, T, English, Friendship & Romance, chapters: 25, words: 79k+, favs: 287, follows: 401, updated: 6/22/2020 published: 4/4/2018, Rick C., Kate B.
201 May It Never End » by Lord of Kavaka
A collection of Caskett drabbles from tumblr based off a 100 prompt meme. Ratings ranging from K to M.Castle, M, English, Romance, chapters: 12, words: 12k+, favs: 117, follows: 175, updated: 5/21/2020 published: 5/4/2016, [Rick C., Kate B.]
830 Indelible » by Dmarx
Years pass and memories fade with time but his words never will. Because he wrote them down, every chapter of their story inked across the page for eternity. Sequel to Spiral Bound.Castle, T, English, Family & Romance, chapters: 30, words: 47k+, favs: 108, follows: 143, updated: 2/3/2020 published: 5/20/2019
459 Private Eyes 3: You Know My Name » by Lord of Kavaka
Part 3 of the PRIVATE EYES series. They know his name. He knows theirs. Now Detective Kate Beckett and her boyfriend, CIA Agent Rick Castle, must work together to bring down the man responsible for her mother's death. Meanwhile, Ray Kilmer (aka Cole Maddox) seeks revenge on his former employers. AU. Spy Castle. Castle Ficathon 2019. NOW COMPLETE.Castle, T, English, Suspense & Romance, chapters: 37, words: 182k+, favs: 68, follows: 72, updated: 11/13/2019 published: 8/8/2019, [Rick C., Kate B.] C. Maddox
145Undefined » by caffinate-me
When Detective Rick Rodgers moved back to New York from LA to take a job at the NYPD's 12th Precinct, the one thing he expected less than being haunted by his predecessor's cases, was to be living with her ghost. AUCastle, T, English, Drama & Supernatural, chapters: 6, words: 14k+, favs: 73, follows: 153, updated: 11/11/2019 published: 5/19/2019, Rick C., Kate B.
44A not-so-spooky date night by EllaNight
"As much as she loves Halloween with their kids, she wasn't too upset at having a night off with her husband and the loft all to themselves." A post-series one-shot.Castle, T, English, Family & Romance, words: 2k+, favs: 52, follows: 28, 11/4/2019, Rick C., Kate B.
554 Oh, Kiddos » by WRTRD
A chance meeting leads to a grand scheme. Set during S3. Complete.Castle, T, English, Humor & Romance, chapters: 11, words: 29k+, favs: 121, follows: 151, updated: 9/29/2019 published: 8/5/2019, Rick C., Kate B., Martha R., S. Perlmutter