An AU story:Captain Richard Castle commands the 44 gun frigate the U.S.S. Retribution during the War of 1812. Lady Katherine Beckett is a young Irish beauty trapped in a loveless marriage with a venal man 25 years her senior. What will happen when their paths cross at sea?

After the dirty bomb/freezer incidents and kate choosing Josh Castle has had enough and walks away from her and the precinct. After being out of the city for two months he returns and ends up on the TV show Mr.Right, a match making show. In the intirem Kate breaks up with Josh and realizes what she lost. Learning of the show and Castle's involvement, she fears she may lose him.

How would things have turned out different if one of them could have heard the others thoughts at the times they needed to most.

A dark, deeply buried secret from Castle's past resurfaces just as a case involving someone close to her puts him at odds with Beckett. (Set late Season 3)

Castle's a wreck after the shooting, struggling with his feelings for Kate while navigating her months-long lack of communication. He reluctantly enters therapy at his daughter's request and starts to put the pieces together - until he bumps into Kate at a coffee shop. Reeling with betrayal, he puts their partnership on hold. Canon until Post-Knockout. COMPLETE.

Photographer Kate Beckett and aspiring novelist Rick Rodgers are perfectly content in their solitary lives. But it's only after an unlikely matchmaker conspires to have them meet that they realize how extraordinary their lives could become. A Castle AU for Summer Ficathon 2016 co-written by airbefore and caffinate-me.

Set after season 2, right before the beginning of season 3… goes AU from there. Castle and Beckett are reunited after a summer apart because of an accident. What will happen next? This is not Beta'd. All mistakes are mine. Amnesia trope (because I love it) You've been warned!

Richard Castle is loved by few and hated with a passion unrivaled by others. Broken and hurting, his soul all but destroyed. Kate is hiding just to stay alive until one fateful day. Once upon a time, ... "Now Complete"

AU. Beckett has the power to reverse time, and one day she sleeps with Castle to see how it'd be like, reversing time afterwords so he doesn't have any clue about it. Only she becomes pregnant from the encounter. Will she tell him her secret, and let him be in the baby's life? [Tumblr prompt]

AU Based on Married At First Sight. Kate and Castle get married without ever meeting before. The first couple of chapters probably won't be M, but ones after that might be.

"You may not care, but I'm not losing you again," he states under his breath, his eyes a thunderous shade of blue burning bright in the darkness of night all around them. "Definitely not like this." A Castle Halloween Bash 2016 entry. Set during 4x22, 'Undead Again'.

The moment they met, their lives became extraordinary. They just didn't know it yet. A pre-series meeting AU. Entry for the Castle Summer Hiatus 2015 Ficathon.

Richard Castle and Kate Beckett meet and fight mysterious foes that are kidnapping humans from remote sectors of space. An AU imagining of the Castle characters in the Mass Effect universe.

AU meeting fic. Kate is a young mother, living in the same apartment complex as Castle. He is annoyed that the baby is crying all night while he tries to write, and goes to yell at her. Instead, he finds her disheveled and upset, pacing with the baby down the hall, and offers to help.

Kate's been in a coma for 2 years. When she awakens, she learns that Castle let her go. He's moved on for the sake of his sanity. Can she forgive him for abandoning her? Will Castle risk his heart again to be with Kate? Love always finds a way. Or so they say!

A serial Bomber is loose in NYC. Kate and her team meet with a new addition to their team. Meet Lt. Richard Castle. An active member with the NYPD's Bomb Disposal Unit. He is teamed with the homicide detectives from the 12th precinct to stop this mad man. But what they don't know is that Rick has a tortured past. This case will either ruin him or save him. Will Kate fall for him?

After encountering a suspect with a stun grenade, Castle is left temporarily blind. Beckett, feeling guilty about the accident, offers to take care of him. A Season 3 story.

Because they discussed fonts—really, fonts—long before they chose their Save the Date card. A series of standalone, unrelated chapters, covering a wide time period and with a variety of ratings. The first one, rated M, takes place during the book party in 2x05, "When the Bough Breaks." Also, because a few people have asked: yes, every font mentioned in these chapters is real.

Katherine Beckett is the city's most influential women's self help journalist. What happens when she becomes more involved in her next story than she initially intended? A Caskett AU story based on "How To Lose a Guy in Ten Days" for the 2015 Castle Summer Ficathon

A Ghost Love Story. "He knew something was different the moment he stepped into the brownstone." Extremely AU. Caskett set in 1890. CastleHalloweenBash 2014 Entry. Now Complete.

This is an AU story. Kate Beckett-Sorenson is a detective, Richard Caste a famous writer. A chance encounter brings them together for one night, but is there more for them? Can love transcend space and time? Is life the search for the one and is there really just one for each person?

"What is she thinking? Uprooting her life, leaving the only town she's ever called home, and, even worse, dragging her father along because she's too selfish to leave him behind. But the new job should excite her. And it does. Secret Service Agent? It's a leap she never thought she'd take." Based on a prompt from the castlefanficprompts tumblr.

'They'll be fine. This isn't permanent. She won't let it be, and she wants to believe he won't either. Kate leaves their home without another word, just a final slam of the door.' For #CastleFanficMonday.

Castle and Beckett both join the same dating website after incessant encouragement from their family and friends and start talking to each other without knowing it due to the anonymity of their profiles. Loosely based on "You've Got Mail." My entry for the Rom Com Fic Challenge.

AU Season 1: He's been following Beckett for a month and now Castle is going to tell her the one thing guaranteed to make her happy. But will it? (Rated M for Chapters 20 & 21)

AU. Castle has a brain tumour and needs surgery. When he doesn't wake up for a few days after the surgery, Beckett discovers that he had left her little notes all across the city for her to re-explore their story and distract herself from not knowing if he will ever wake up again.

Set during Season 4, Richard Castle stands outside the interrogation room watching Kate Beckett interrogate a suspect from the plaza bombing case, when suddenly a single unintentional sentence launches an unexpected journey.

[Post s6 finale] Following Castle's death, Beckett tries to deal with his loss. But when he comes back five years later, holding HER book in his hands, Kate retreats in her guilt and tries to adapt to this new situation with Martha, Alexis and the twins she had after his "death".

Kate's world has been crushed! Rick's world has been shattered. Both are in pain and chance plays in their favor. Question is can they see the sliver of light in their dark world? Will the light heal them or burn them? Plus the stakes are huge this time, really huge! - NOW COMPLETE!

In the middle of 4x21, "Headhunters," an angry Beckett confronts Castle at home. First two chapters are rated Rated T, but the final one is M. Three-shot. Complete.

'Castle plops down to the sand once she's gone, opens his notebook on his bent knees and uncaps his pen. He came here for inspiration, and he may have just found it.' Based on a gif set by katigron on tumblr.

'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.

Eight years later Richard Castle is found, and it's no longer his ring on her finger. AU from 6x23 "For Better Or Worse".

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

Another attempt to explain the motivations and consequences of the decisions made during the final episodes of season 5. Canon up to the confrontation in Beckett's apartment during the episode and then AU from there. Long story, with daily updates. NOW COMPLETE.

Trust, but verify. Kate Beckett loved to have control over all things concerning her private life and her job. But what will happen when she'll lose said control in one of those two aspects in her life? AU Caskett meeting.

He's unsure as to whether or not it's a date when they marathon John Woo movies together. Always AU.

An AU Caskett meeting. Because regardless of time or distance, they will find each other. Three shot.

This is a Castle Winter Hiatus 2014 Ficathon EntryKate gets called into the school for a parent/teacher conference because her daughter keeps getting in fights with Alexis Castle. Johanna Beckett is also still alive. As such, this story is very AU.

He's never far from her thoughts, hovering in the back of her mind. The Detective in her, (not the warm-blooded woman, she keeps telling herself) yearns to know why her favorite author disappeared from the spotlight after completing the Storm series. She's never more shocked when a year later he steps off the precinct elevator, searching for her. AU/Romance/Co-written w/Retired1984

On the surface they are living the American dream, but as the sun goes down, so does their façade. An Alternative Universe

"How ironic that it should have been his books that had rescued her, when it had been he whose words had damned her in the first place." AU s1. Please read a/n at the beginning.

Just playing with Cops & Robbers. What happens if Kate admits to needing Rick, and he leaves the bank to be with her?

AU where Kate goes to law school. They were chasing fire, and people who chased fire were bound to get burned. The thing was, he had already been burned by this woman; her kiss was permanently seared into his brain and he knew he would spend a lifetime chasing after her to get that feeling back again. NOW COMPLETE

"What's past is prologue." -William Shakespeare, The Tempest, Act II Scene I. An AU season six Castle story.

As Kate finds herself getting back on solid ground in her relationship with Castle, her world gets turned upside down by an unexpected visitor. As emotions run high and danger lurks will she and Castle be able to stand together and become stronger or will their secrets and lies eventually tear them apart? AU Set after 4x22 Undead Again. Cover Art by LordofKavaka. Now Edited 9/2015.

Beckett is distraught when Castle seems to have finally given up hope on them ever being more than just partners, and he begins to pull away from her, prompting her to face up to her own feelings.

I'm the apple that didn't fall far from the tree. I barely rolled further than the roots. AU-ish Future Fic

"Castle, Castle wake up." Their joined hands wiggle against her belly in her efforts to rouse him. "Castle, we got married last night," she hisses. - A Season 4 AU that starts mid-4x08 (Heartbreak Hotel) based on a tumblr prompt. Caskett.

"I love you, Kate," he murmurs softly, the words he's kept swallowed down for almost an entire year finally slipping from his lips. "And I promise if I make it out of this alive, I'll tell you when neither of us are on the brink of death, okay?" An AU version of 7x08, Kill Switch.

An AU twist on 7x04, Child's Play. Complete.

When Richard Castle learns his publisher hired a writing consultant to help him complete his latest novel he's insulted-until he meets her. Dr. Kate Beckett was merely looking for a summer job between semesters, but could three weeks with the famous writer might be more than she bargained for? Caskett AU.

Alternate Ending/Post-Episode Fic for Countdown. ""Hell of a day, huh?" She shakes her head, still trying to fathom everything that had happened. It's all a bit surreal. "Hell of a day," she agrees, giving him a soft smile that makes his heart flutter rapidly in his chest." Rated M. *Updated 10/16/14* One-shot.

S4 AU It's been a month since Kate was shot. A month since he's heard from her. A month since he's been sleepless in Manhattan.

An old cliche with a twist. Rick and Kate meet in a book store, but not in the way you'd imagine. They start to get to know one another and soon find that they both have a lot of things going on that neither expected of the other. Can they make their baggage match, or will their histories clash too much?

Season four fic, set shortly after Once Upon a Crime. A misunderstanding makes the green-eyed monster rear its ugly head.

What if a lost notebook had brought Castle and Beckett together a long time before season 1?

A direct follow up story to Inchoate by ColieMacKenzie. Castle and Beckett are both miserable following their divorce. Can they heal their broken relationship?

Post Watershed. Kate has accepted both the proposal and the job. As she begins training while Rick is off on a long book tour she becomes quite ill. Will Rick be at her side in time?

When Kate gets into a car accident, the outcome of her injury is retrograde amnesia – she doesn't remember her life after 2008. Rick, as a result, is left to deal with the consequences of his wife's memory loss while she comes to terms with their life together. Based on a gifset by veraflynns on tumblr. 2014 Ficathon Entry.

Castle and Beckett find themselves in a dark place, but they soon discover it's always darkest before the dawn. A 2014 Castle Ficathon entry based upon the following season 4 prompt (it's a small plot point that I'm running away with): "What if Castle didn't bring Jacinda to the crime scene in The Limey?"

Takes place three years after early-season 5. Castle & Beckett haven't seen one another during that time, each going their separate ways. They both travel to Paris, neither knowing the other is there, & when their paths collide, desire & passion take over as they gain back those missed years & rediscover one another. . .Rated M. *Updated 07/07/2014* Final chapter is now up!

Wrongly accused of two murders he didn't commit, Richard Castle escapes police custody in hopes of proving his own innocence. FBI Agent Kate Beckett is on the team assigned to bring him in, but as the bizarre evidence stacks up, she begins to question his guilt-particularly after meeting him face-to-face. AU. 2014 Ficathon Entry

His eyes find her across the distance. He disentangles himself, walks toward her and for a moment it's like no time has passed and nothing is different... Future fic.

Post ep. 6.03...my take on unemployed Beckett and how she reacted to the news. Will she go back to work or will she stay unemployed?

Just a few days before Kate leaves to have her first, and long awaited, baby, a case comes across her desk and she's determined to solve it before her last day. But it soon becomes apparent that there may be a far deadlier reason for a quick solve to be required.

Confined and surrounded by complete darkness - not sure where she is and completely alone - Beckett struggles to find the light... and Castle. Takes place early April in Season 6 - No Spoilers (No idea how to categorize this... so let's go with 'not fluffy') - COMPLETE

"There would be no unexpected sound of her key in the lock. No sound of stilettos across the floorboards. No laughing greeting or warm embrace or welcoming kiss. Not any more." -My entry for the 2013 Castle Hiatus Ficathon

"The stakes are high. The water's rough. But this love is ours." Future Fic.

Castle and Beckett never met five years ago. Beckett's Mom's case remains unsolved, and Castle has no muse. What happens when their paths cross? An AU Target/Hunt meeting.

Season 3 AU. Post-"Countdown" - What if Castle had been able to say the things he'd always wanted to?

They meet again in the hospital. AU. Cover art by half0utloud.

It started in a club and then ended like this. Reeling from a break-up, Kate Beckett is most definitely on the rebound. But what she gets instead is something she never imagined. AU

A sequel to 'Coming Home'. "She thinks she understands – the life she led here for three solitary months is still a mystery to him. So she gives him latitude to catch-up, to ease into the small space she made for herself: the sharply delineated edges that her DC life was defined and constrained by. She resolves to show him that he missed nothing, while all she missed was him."

Coming out of World War II, the song had a hopefullness to it. Now, it held an omninous dread for her. And it just kept coming back again and again to taunt them. 2013/14 Winter Ficathon Entry. Rated M for violence, language, and mature sexual content.

When you get those rare moments of clarity, those flashes when the universe makes sense, you try desperately to hold on to them. They are the lifeboats for the darker times. A season 4 AU based on the fanvideo by OhChizzz.

First day back from their honeymoon and someone had to find a body at – she glanced at the clock again – 5:53 in the morning? Set early season 7. Complete.

Post-Ep for 4x10: 'Cuffed'. 'Her body is buzzing with energy, pure adrenalin still racing through her veins, when Castle dumps her own handcuffs into the box of belongings she's currently holding, giving her a loaded look that she's too keyed up to decipher when she slowly drags her eyes up to meet his.'

Ep 4:21 Headhunters Kate takes on Slaughter in high heels, She is going to get her partner back. He's pulled away, it's time to fix things.

Don't know if anyone else has tried this but here's my shot at it. Kate's the author. Rick's the Detective. Read?

A requested fic for alwaysdefectivecastle. What would have happened in the Hamptons if a dead man hadn't fallen into the pool?

This is my entry for the 2013/2014 Winter Ficathon. She awoke with a start. The bed beside her was cold, the room still dark save for the soft glow of the streetlight filtering in through the window as it reflected off of the steadily falling snow. I will be using prompts #1 & #3. A carefully planned pregnancy brings hope and joy into the Castle's lives. Rated M for Caskett fluff.

Set between 'Always' and 'After The Storm'... Three times. M-RATED.

Castle is sick and Beckett breaks into his apartment looking for him. What will arise as she starts caring for the man who annoys her so? Set in Season 4. Fluff and smut with some character development. Now AU because of the finale. Finally Completed :

"She's falling down the rabbit hole of her obsession, but completely unable to stop." Her mother's case haunts Beckett's sleep and the only thing stopping her nightmares is being with Castle. Season Two, post the almost kiss in Vampire Weekend. NOW COMPLETE.

Kate and Rick are about to celebrate their engagement, but a certain Dr. Motorcycle-Boy may have something to say about it. Don't worry. Nothing too crazy going on here! In my world, they will always get their, well, always ;-)

"I lied to you. We've hardly spoken in two days. And now..." Her voice wavers, and she shakes her head regretfully, hating that she's doing this to him. "That's not a solid foundation for the future, Castle." Entry for the 2013 Castle Ficathon. Complete.

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.

"She gave him her body. She gave him her body and her words and her heart. She gave him all her rain-soaked skin could allow." How they spend their summer. 'Always' spoilers. COMPLETE

He has always been there, her rock. Now it is Kate's turn to care for him. When the unthinkable happens, Kate's love and loyalty are put to the ultimate test. Note the rating change to M please. Although, with the M comes the fluff!

Kate Beckett didn't want to be a mother. Her job was dangerous; the thought of leaving her child alone in the world was too much to bear. However, it might be a risk she is willing to take to see the child that brings such a smile to Rick Castle's face.

Rick Castle, who kept her from freezing to death and held her hand in front of a bomb, prepared to die with her, wasn't who she was going home with. Kate's night after the end of Countdown.

Set post "Countdown" Beckett is ready to admit her feelings for Castle and they move their relationship to the next level.

Something happens to make Beckett reevaluate her relationship with Josh. Castle tries to do the right thing despite his own feelings.

"Tell me one thing, does the song make sense?" Castle, Beckett, a charity benefit. Minor spoilers for middle of Season 3. T now, but will be M later.

An invitation, an even, and a date. Well, a non-date.

A continuation of Dangerous Game. Highly recommended that you read that first. Beckett tries to figure out where she wants things to go with Castle. Meanwhile, a serial killer fixates on Beckett.