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Solace (Hypotheticals Series—Pre-Show)
by JohnQKole reviews
Pre-Series installment of "Hypotheticals." A recently divorced author meets a gorgeous Stanford pre-Law student at a book signing in late 1998. The pair meet again nearly a year later when she's recovering from a tragedy and he's acclimating to life as a single father. Both are struggling more than they let on. A pre-series exploration of characters/love/friendship/romance.
Castle - Rated: M - English - Romance - Chapters: 24 - Words: 122,375 - Reviews: 388 - Favs: 123 - Follows: 231 - Updated: 12/11/2019 - Published: 5/2/2019 - [Kate B., Rick C.]
Another Auld Lang Syne
by GeekMom reviews
A/U For years, he thought she was dead. Murdered - he had been a suspect. He loved her. He mourned her, but the problem was that that person didn't even exist. The Castle characters aren't mine, but I raise my glass in Auld Lang Syne to Marlowe and company.
Castle - Rated: T - English - Drama/Romance - Chapters: 6 - Words: 18,045 - Reviews: 253 - Favs: 106 - Follows: 261 - Updated: 7/24/2019 - Published: 6/5/2017 - Rick C., Kate B.
Sitting in a Tree, Backwards Part III--COMPLETE!
by Bren Williams reviews
After proposing to Castle out of the blue in mid-season 3, and a sudden, whirlwind marriage, Kate must finally confront the secret she's kept from Rick for seven years. Very Alternate Universe.
Castle - Rated: T - English - Drama/Angst - Chapters: 14 - Words: 62,463 - Reviews: 426 - Favs: 113 - Follows: 225 - Updated: 7/26/2017 - Published: 9/21/2016 - Rick C., Kate B. - Complete
Coup de Grâce
by ipreferwestside reviews
She's falling down the rabbit hole of her mother's murder again, has taken a hold of their single lead and dug her claws in, and if she isn't careful, it will consume her, likely kill her. He won't let that happen. A Knockout AU. COMPLETE.
Castle - Rated: T - English - Angst/Hurt/Comfort - Chapters: 4 - Words: 10,916 - Reviews: 137 - Favs: 78 - Follows: 143 - Updated: 7/5/2017 - Published: 5/13/2017 - Rick C., Kate B. - Complete
by Griever11 reviews
'Loving her wasn't going away quietly. Loving her might break him.' Takes place after 4x21 Headhunters. Co-authored by jstar1382, chezchuckles and griever11.
Castle - Rated: T - English - Angst/Romance - Chapters: 8 - Words: 16,212 - Reviews: 346 - Favs: 180 - Follows: 313 - Updated: 1/11/2017 - Published: 12/28/2016 - Rick C., Kate B. - Complete
State of the Union
by caffinate-me reviews
When Special Agent Kate Beckett is offered an interview for a Secret Service position at the White House she didn't know what to expect, but even less than the position as personal protection for the first daughter, she never expected him. President/SSA AU. COMPLETE.
Castle - Rated: T - English - Drama/Romance - Chapters: 19 - Words: 51,749 - Reviews: 1732 - Favs: 753 - Follows: 958 - Updated: 1/24/2016 - Published: 3/9/2015 - Rick C., Kate B., Alexis C. - Complete
by JerichoSteele reviews
Since I thought Kate's "I want you" wasn't enough, this is my little spin on what should have happened on the night of Alexis' graduation. Had a recalibration to my cranial orb and decided that there was too much to this story to let it go so easily. WIP.
Castle - Rated: T - English - Drama/Angst - Chapters: 7 - Words: 28,022 - Reviews: 270 - Favs: 99 - Follows: 179 - Updated: 11/17/2015 - Published: 4/8/2015 - Rick C., Kate B. - Complete
my faults and cracks
by sorde reviews
"There comes a point when you just have to... stop waiting for the phone to ring." Beckett doesn't call when she gets back to the city. S4 AU, for #CastleFanficMonday!
Castle - Rated: K+ - English - Romance - Chapters: 1 - Words: 5,088 - Reviews: 21 - Favs: 48 - Follows: 16 - Published: 9/14/2015 - Rick C., Kate B. - Complete
Risking It All
by Liv Wilder reviews
Castle steals a police horse. The arresting officer is none other than Kate Beckett. "You got yourself up there and now you're going to get back down. I want you to concentrate. Carefully lift your leg over its flank, then slide to the ground. Preferably without breaking anything. Or losing that blanket. No one wants to see your bare ass swaying in the moonlight. Least of all me."
Castle - Rated: M - English - Humor/Romance - Chapters: 16 - Words: 62,826 - Reviews: 771 - Favs: 265 - Follows: 536 - Updated: 7/3/2015 - Published: 2/1/2015 - Rick C., Kate B.
by honeyandvodka reviews
A new series about a certain British secret agent? Even if it meant no more Nikki Heat, the offer was a dream come true. A change of scenery and a fresh challenge were exactly what he needed. So why did Castle feel like instead of starting a new story, he was closing a book mid-chapter? AU from 'When the Bough Breaks'.
Castle - Rated: T - English - Romance/Hurt/Comfort - Chapters: 15 - Words: 33,726 - Reviews: 769 - Favs: 306 - Follows: 340 - Updated: 6/28/2015 - Published: 5/10/2015 - Rick C., Kate B. - Complete
by Perspex13 reviews
After solving a case that brings him to the attention of the FBI, Castle pursues new opportunities to meet old goals while addressing imbalances in his professional and personal lives. Sequel to "Just Along for the Ride," which was set in Season 4 but goes AU from there.
Castle - Rated: T - English - Drama/Adventure - Chapters: 30 - Words: 154,801 - Reviews: 426 - Favs: 147 - Follows: 155 - Updated: 6/24/2015 - Published: 3/15/2015 - Rick C., Kate B., Javier E., Kevin R. - Complete
Hunt the Hunter
by Aalon reviews
Set at the end of Season 5, this story picks up four days after the end of The Wonder. If you have not read that story, please do so, first, as it sets this AU into place.
Castle - Rated: T - English - Drama/Mystery - Chapters: 17 - Words: 59,316 - Reviews: 187 - Favs: 42 - Follows: 68 - Updated: 6/7/2015 - Published: 4/28/2015 - Complete
by Aalon reviews
This is an AU take on the disappearance of Richard Castle before his wedding at the end of Season 6, leading into Season 7. As the title indicates, this is a rather dark tale with strong themes, so please be forewarned.
Castle - Rated: T - English - Drama - Chapters: 17 - Words: 56,786 - Reviews: 180 - Favs: 52 - Follows: 63 - Updated: 6/1/2015 - Published: 4/28/2015 - Complete
A Not So Temporary Thing
by humerus reviews
Sequel to my fic Just a Temporary Thing. AU season 3. Four months after the events of "Tick, Tick, Tick/Boom", Kate is still staying with the Castles. But could a family tragedy make this temporary arrangement a bit more permanent?
Castle - Rated: T - English - Family - Chapters: 19 - Words: 75,295 - Reviews: 514 - Favs: 327 - Follows: 780 - Updated: 5/1/2015 - Published: 2/3/2012 - Rick C., Kate B.
by chezchuckles reviews
tumblr prompt: They slept together after Ryan's wedding but never talked about it. Kate finds out she is pregnant but doesn't know how to tell him, especially after the events of 47 seconds (and Limey).
Castle - Rated: T - English - Romance - Chapters: 34 - Words: 44,241 - Reviews: 1535 - Favs: 519 - Follows: 677 - Updated: 4/25/2015 - Published: 4/4/2015 - Rick C., Kate B. - Complete
Out of the Blue
by Trinity Everett reviews
Kate arrives at the loft for an impromptu visit and she comes bearing news. A Season 6 AU that picks up after the beginning of 6x01, Valkyrie.
Castle - Rated: T - English - Romance/Humor - Chapters: 15 - Words: 54,885 - Reviews: 470 - Favs: 347 - Follows: 504 - Updated: 3/28/2015 - Published: 11/17/2014 - Rick C., Kate B. - Complete
by Aalon reviews
Set in Season 5, this is an AU take on the Watershed episode, where a different decision by Castle can yield different stories, and different outcomes. Multi-Chapter.
Castle - Rated: T - English - Drama/Family - Chapters: 21 - Words: 84,505 - Reviews: 466 - Favs: 118 - Follows: 241 - Updated: 3/16/2015 - Published: 1/17/2015 - Rick C., Kate B. - Complete
by drdit92 reviews
A cowardly betrayal leaves Rick Rodgers and Kate Beckett fighting for their lives. Can they learn to rely on the other; will it lead to something more? What happens when they return from exile and the world learns the truth? A/U. Complete. Giant hugs to who've taken a chance on this story and followed to the end. Which is just a beginning...
Castle - Rated: T - English - Adventure/Romance - Chapters: 73 - Words: 328,232 - Reviews: 2253 - Favs: 297 - Follows: 340 - Updated: 2/15/2015 - Published: 5/17/2014 - Rick C., Kate B. - Complete
by bravevulnerability reviews
'This isn't an adventure, it isn't fun. It's a nightmare. They're being hunted like foxes and there is no other option, no way to fight, to win. They can only run.' An AU twist on 6x22, Veritas. For Nadia.
Castle - Rated: T - English - Angst/Romance - Chapters: 12 - Words: 24,155 - Reviews: 454 - Favs: 207 - Follows: 258 - Updated: 2/13/2015 - Published: 1/18/2015 - Rick C., Kate B. - Complete
A Different Road Taken
by Aalon reviews
Set in Season 4, Episode 1 after Kate Beckett is shot. Story goes AU immediately after Rick leaves Kate's room in the hospital. Rick takes a very different road, and finds a very different and fulfilling purpose.
Castle - Rated: T - English - Drama/Romance - Chapters: 25 - Words: 104,906 - Reviews: 456 - Favs: 256 - Follows: 313 - Updated: 1/20/2015 - Published: 9/5/2014 - Rick C., Kate B. - Complete
Truth or Dare
by skygirl55 reviews
Richard Castle has been set up to take the fall for a murder he did not commit. (Prompt: What if Probable Cause took place in S4, before Castle & Beckett were together?) Canon through mid-S4.
Castle - Rated: M - English - Romance - Chapters: 15 - Words: 41,843 - Reviews: 235 - Favs: 157 - Follows: 275 - Updated: 1/8/2015 - Published: 11/29/2014 - Rick C., Kate B. - Complete