A collection of unrelated one-shots exploring various 'what if' scenarios. #18: What if… Castle didn't come clean about Johanna Beckett's murder at the end of 1x10?

Caskett Season 4 one-shot. AU Post 4x11 (Til Death Do Us Part)

While following a lead in a gruesome homicide case, Captain Kate Beckett disappears and is eventually presumed dead. Six years later she's found, barely alive, in a cabin in the woods, only to return to a world she no longer recognizes. An Absentia-inspired Castle fic.

Castle overhears Beckett interrogating Bobby during the Boylan Plaza bombing case, but instead of storming off in a hurt fit, he is too stunned to move. 47 SECONDS AU. Oneshot. Originally posted as a tweet fic.

"So, I was thinking, I'm still kinda wired, don't really want to go home yet. Want to go somewhere, grab a drink, decompress?" AU for the end of "Countdown."

Beckett and Castle are stranded in a small cabin during a snow storm at Christmas time. Will the time alone bring them closer together? A season 4 fic.

Kate Beckett wakes in a world where nothing is as she knows it to be. A season 4, AU story. NOW COMPLETE.

If you're searching for forever, I'll be waiting; come find me. Caskett semi-AU canon from Nikki Heat's book release (2x05)

"You don't even care about me any more, and I still feel like I cheated on you." ONESHOT Post Limey, angsty but with a happy ending

Bringing up both hands Castle scrubbed them across his forehead and asked himself for the millionth time: Why? Why couldn't he just let her go? Caskett Angst post The Limey

Beckett overhears Castle telling Demming that there's no flag on the play, which comes on top of an unsuccessful stay at the loft and a case which reopens a less-than-pleasant time in her past. AU of the second half of S2. Please see warning inside.

Detective Kate Beckett was shot. She succumbed to her injuries after eight hours on the operating table. She died. At least, that's what her family and friends were told. In truth, she survived and was placed in witness protection. Now, after three years, she returns home. Castle Ficathon 2017 entry.

'He wants her. He wants her so much, it's naked and gleaming in his gaze, but he thinks he can't have her and she has to fix it.' Set post 4x21, 'Headhunters'. For the #CastlePornado.

"Beckett," Castle calls, dropping his forehead against the door's frame while his arm remains upright, mechanically slamming his fist into the surface of the door. "Why aren't you answering?" Ah, definitely drunk then.' A season 4 AU set between 4x21, 'Headhunters', and 4x22, 'Undead Again'. For AC.

TFLN prompt: "Just calling to thank you for not dying. I love you." An alternate ending for 4x21 "Headhunters."

'She's in the middle of seducing Nigel Wyndham with her words, earning his interest with ease, and he's about to give up that champagne glass he'd been nursing with his prints all over it, when a hand touches her waist, a throat clears. "May I cut in?"' An AU insert for 4x20, 'The Limey'.

A magical AU twist on Season 3's Set Up/Count Down. 3-parter. Caskett.

An unprecedented viral outbreak alters the course of Richard Castle's life forever. AU-Post-To Love and Die in LA. Caskett.

'Loving her wasn't going away quietly. Loving her might break him.' Takes place after 4x21 Headhunters. Co-authored by jstar1382, chezchuckles and griever11.

(Season 4) It's almost Christmas, and things had been going pretty well between Castle and Beckett. But now a new complication has developed...

"It doesn't matter, though, does it? The fact is I'm no closer to figuring out who's hurting Castle or why he's allowing it." Beckett notices some disturbing changes in her partner after her return to the 12th. An AU set early in Season 4 after Rise.

Collapsing down against her calves, Kate's neck hung forward and her shoulders hunched as sobs began resonating in her diaphragm. In less than one minute her entire future had been erased—evaporated and disappeared as if it never existed. Angsty AU Ending to Cops & Robbers (4x07)

"She can't get the image out of her head: the way Castle had looked at her when she walked across the bullpen earlier tonight wearing that strapless black gown." Set during "The Limey."

Finding another living, breathing human being in the post-apocalyptic world was not just difficult, but impossible. Kate Beckett never expected to find anyone, let alone Richard Castle. After saving him from certain death, they form an alliance, which soon leads to the realization from both of them that they finally found a reason to keep living. Caskett AU/ZombieApocolypse

Pulling all the wires might have stopped the bomb, but life at the 12th still explodes. An AU story set immediately following Countdown. #CastleFicathon Summer 2016.

What might have happened if Royce had been killed after '47 Seconds.' Caskett.

It'd been one of the more bizarre phone calls she'd ever received... AU post-ep for episode 4x20, 'The Limey.'

A wishful-thinking retelling of the couch scene from "To Love And Die In L.A." What if Castle had still been there when Beckett reopened her door?

Rick recibe la misteriosa llamada de una persona del pasado de Kate. Y cuando, movido por la curiosidad, se encuentra con ella, descubre que no es ni más ni menos que Johanna Beckett... que intenta regresar a la vida de su hija luego de haber estado protegida hasta que su "caso" se resolviera... Historia AU. Último capítulo!

A collection of prompt fills for the Castlefanfics Prompt Challenge, which can be found on the castlefanfics tumblr.

AU: Castle is the fun English teacher. Beckett is the strict English teacher. All their students ship them together. (And they may ship themselves together, too). Castle Ficathon 2015 Entry.

Knockout AU where no one is shot. "And that is the biggest piece of crap you've said so far," shouts Kate, pointing her finger directly at his chest. "Why don't you just say it?" Taking a step closer, she says it again, adding more taunt to her voice while their eyes connect. "Why don't you say it, say it while I'm on two feet and not being shot at!"

'With a bottle of their favorite red wine in hand, she'd headed over to Kate's place tonight, hoping beyond hope to catch her at home and get the straight scoop from her...' Lanie investigates where Kate has disappeared to since her suspension was handed down and makes an interesting discovery in the process. Early season 5 fluff.

"A hand drifts across her shoulders, catching strands of hair, drawing them over her shoulder, gentle and sweet and forbidden, but she sinks into his touch for just a moment anyway. Because he's back. He's not supposed to be back." A season 4 Valentine's Day story. For Valen.

"She glanced down at the slip of paper on the passenger seat, crossed with the hasty scrawl of the address. Yup. This was the place, all right." What if, in Headhunters, Castle found himself dumped out in the sticks mid-investigation by Slaughter? Belated birthday present for the lovely Nic/ColieMacKenzie. Twoshot. Rating will go up in the second chapter.

I just escaped from possibly the most awkward date in the history of Earth, and I need to decompress. I brought ice cream. And wine. And cupcakes. 1x7, Home is Where the Heart Stops.

During the course of an investigation, Castle finds a genie's lamp among a victim's belongings and decides to have some fun. [Crack!fic set mid-season 4]

Picks up immediately after the end of 4x11 - Ryan's wedding. What if, for just one night, Kate Beckett needed an escape from her own life-an escape named Richard Castle.

"Do you know how twisted that feels? We have nothing. We are nothing," she hisses, "and I still felt like I had cheated." After going to bed with Colin Hunt, Kate comes to terms with what she wants and what Castle deserves. Season 4, AU post The Limey.

'Martha is right. This really can't wait another day, wall be damned...' Castle and Beckett get a nudge in the right direction, courtesy of his mother. An AU Cops and Robbers ending in honor of Castle FanFic Monday.

What would happen if a line of dialogue from Law & Boarder was inserted into a scene from Undead Again. Just because I couldn't stop thinking about it. One shot.

"Okay, look, I think maybe you're hoping for perfect, Beckett. All this work you've been putting in…it's great. Really great. But I can tell you for a fact…perfect doesn't exist." One shot post-4x22 "Undead Again". COMPLETE

'Kate jerks up from her seat, ready to do damage, to make Vulcan Simmons pay, but before she can even dig her hands into his shirt and fling him against the wall, Castle already has him by the neck.' A twist on 3x13, Knockdown.

Post 4x16 Linchpin AU. After surviving another death experience at the hands of Castle's former flame, Beckett is forced to finally confront her feelings for her partner. Prompt fill from the castlefanficprompts blog. One shot.

AU for 4x06 Demons. What if, instead of quoting Ghostbusters, Kate said the other thing Castle really wanted to hear? One shot.

Castle complained in the season 3 finale that he and Beckett had kissed but never talked about it. What if they HAD talked about it? Set approximately ten hours after the last Caskett scene of 'Knockdown' (3x13). Potential spoilers through season 3, potential vague spoilers for all aired episodes.

"She's so ready for this. For him. For happiness and love and movie dates." AU - what might have happened had they gotten to have that Jon Woo marathon. One shot. Complete.

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).

Esposito, Ryan, Castle and Beckett are stuck in a tiny hotel room, so they have to decide who gets to share the double bed. Set after 5x03 but before 5x04. A little story for #CastleFanficMonday.

"She's so happy she's not sitting at the singles table, couldn't fathom not being here to witness the pure joy painted across his face." Episode insert for 4x11. For Alex.

'I can't stop wanting you. Needing you. Loving you. And it's really starting to piss me off.' What if instead of Castle overhearing Kate in '47 Seconds' Kate had overheard Castle talking to Martha and had come to a similar conclusion? Potential spoilers for all episodes. (Real chapter this time. :) 3-15-15 )

A co-authored story by seilleanmor and chezchuckles. Takes place after 3x14 'Lucky Stiff' (with 3x13 'Knockdown's relationship-shifting). No Josh. "Richard Castle has quite possibly never been so grateful to have a ball thrown at his face. Because this - this changes everything."

Based off of the tumblr prompt: 'Kate writes Castle a letter telling him she loves him and she's sorry because they lost their chance since Castle's done waiting.' Set after 4x21, Headhunters.

A fire began to build inside her, and Kate jumped out of her seat, abandoning her phone—and temptation—on her desk as she rushed out of the bullpen, bypassing the elevator and making straight for the stairs. AUish TAG to THE LIMEY. ONE-SHOT. Rated T.

One-shot episode insert for 3x24 "Knockout" explaining how Castle and Beckett reconciled before attending the funeral. "He stares at her as she adds an extra bobby pin to secure her bun, before she drops her arms to her sides and turns her full gaze upon him. "Castle, for the love of God. Spit it out." "I…I've never seen you in uniform before," he stammers. COMPLETE

Post-Ep for '47 Seconds'. "I need a word with you." Castle's voice cuts through the hubbub of the bullpen even though he has it purposefully toned low. Low and rough, scraping at his vocal cords with a touch of something dark and smoky that tugs at Kate's gut, exciting and scaring her in equal measure.

AU story set in Season 4, at the end of Linchpin. That's really all I want to say - I hope you will follow me down the rabbit hole for this one. Strong themes - hence the rating.

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.

Un escritor famoso, una detective fan de sus novelas. Historia algo AU, Castle y Beckett no se conocen personalmente, por ahora! Por favor denle una oportunidad! Último Capítulo!

A collection of Castle and Beckett first kisses! Number Eighteen: "Dare You To Move."

They turn in opposite directions and his skin is on fire, hot annoyance like acid through his veins and - it stuns him - he's hurt. Set S2 during When The Bough Breaks. M for language and content. Now Complete.

"No, it's… okay. It's okay. I'm… glad you're okay." A post-ep/AU of cops and robbers, co-written by tombombadillo and closingdoors.

Knockout fic. Assuming Josh is out of the picture, there's another way they could have channelled their anger during that fight.

4.23 AU - What if Castle and Beckett were able to have their movie date after Alexis's graduation? One-Shot.

ONESHOT Post-ep, alternate ending for Watershed (better late than never) based off a post over on Tumblr from Castle Confessions, later added to by Caskettdensi (he should know the one) Castle does break up with Kate on the swings, but she won't give up so easily.

Beckett remembers wearing her Dress Blues at Roy's funeral. She remembers standing on the podium, and she remembers everything just going black. She doesn't remember the gun shot. Or anything else. What happens when Castle and Beckett have one less lie standing in their way? A season 4 AU, canon until 3.24 Knockout. 2013 Ficathon Entry.

M-rated chapters of Kiss Me, Castle. FMC means...EXPLETIVE DELETED Me, Castle.

What happens when a jealous ex finds out Caskett are a couple. Just some fluff to make us feel good about our pair.

"It would just be research for the case, Castle."

She's shaking, her legs wobbly, fingers clamped around the doorknob as if it's the only thing keeping her upright. Her stomach tightens, with fear, with want, with everything she's so carefully held in check for months, years... What if for 3x22, 'To Love and Die in L.A.'. Happy Birthday, Joy! Winner of "The 12th" Fan Awards 2013 for best M-rated fanfic (under 10,000 words).

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.

She curls her hand around his ear, fingers brushing through his hair as he lies there, head cradled on her chest, body heavy over hers. Post ep, 5x02.

He has to get her out of his system somehow . . . Post-episode aftermath for 'The Limey' and going AU from there.

If she hadn't said yes, they wouldn't have kissed. Alternate Universe. Picks up immediately after Cops and Robbers.

This was so not how she had imagined their friends would find out about her and Castle.

Based on an idea from the chat during 'The Limey'. What if Beckett and Castle were locked in a room together by their friends and family, and weren't allowed to come out until they talked honestly? Rated M for future potential.

Sometimes, the only way to become whole is to break first. Post-Limey/Headhunters.

She's going to do this. Right now. She's going to tell him what he told her.

Beckett and Castle never seem to deal with it because they're so busy being in danger. So Lanie figured there is no time like the present.NOW COMPLETE.

Suddenly tomorrow doesn't seem early enough. "I've got a better idea," he smiles tentatively, holds out his right arm for her. "Come with me." Set post 4x22, Undead Again. NO Spoilers for season finale. NOW COMPLETE.

Kate figures out why Castle has been pulling away from her and knows what she needs to do before he leaves for good. There was never going to be a perfect time to tell him how she feels. Set during the events of "Undead Again". Not canon if you've seen it

'The rain is pouring down, making her damp hair stick to her face. But she doesn't even register it, doesn't even care. Because he lied to her and he loves her and she really needs to sort this mess out.' Oneshot. Warning: contains spoilers for Always!

Sometimes things happen that make you view your choices in an entirely different light. And if you're lucky and brave, you'll get the chance to right some of your wrongs. Season 4. Deals with the revelation of Beckett's secret. Chapter 10 now posted.

Post-ep for Headhunters. Beckett stops by Castle's loft to fix some things, both skin deep and otherwise.

It might have been the bravest thing she ever did. Post-Headhunters, oneshot.

Post-ep for 47 Seconds. I totally wasn't going to do this...But then I had to.

"I'm not going anywhere until I get some answers as to why you're evidently injured and not in a hospital." Minor,synopsis mainly,SPOILERS for "Headhunters" 4x21. *Chapter 5 up now. COMPLETE

It's is about evaluating all the ways you didn't die, all the ways you lived. Caskett, breaking down walls. Post Linchpin.

Fracture: the separation of an object or material into two or more pieces under the action of stress. Post-ep for 47 Seconds.

Castle hasn't made love to a woman in well over a year. Why? The cat's out of the bag. Chapter 3 now added. *Note rating change.

post-ep for 47 Seconds I am completely ignoring the preview for next week. COMPLETELY IGNORING IT. thus the title . oneshot.

SPOILERS for Pandora. A post-ep story. For Laura, who begged me.

Sometimes the hardest thing to do is to begin. Follows Tryst. Post Countdown.

Context is important. Context can change everything, even the simplest of statements like 'I love you.' Emotional story about Rick's feelings and reactions to the shooting, and a different kind of potential roadblock to their relationship. NOW COMPLETE.

"And that was all. Just a kiss?" Life after the kiss.

The call about the body came from Lanie, at four in the morning, on her day off. Lanie never called her about bodies.

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.

"The best you can hope for is to find a place to make your stand. And if you're very lucky, you find someone willing to stand with you." As Kate recovers, she begins to realize the importance of Montgomery's words, both on the job and in life. Spoilers for Knockout. Complete.

Castle deals with some interesting information regarding the state of Beckett's love life. Completed 19 June 2011.

It took her two near-death experiences to finally realize what she'd been denying all this time. But now she knows, can she just dive in?

Post-finale. Castle tries to put the pieces back together.

"I'm tired of pretending, Kate. Aren't you tired?" Not meant to be an LA fic, but you can take it that way if you want. Originally just Kate's kitchen after a tough case

It takes a lot to push Detective Kate Beckett over the edge.

What if Kate had decided to take action when Natalie Rhodes threw herself at Castle? Spoilers for 3x11 Nikki Heat episode

The world didn't end. It is only his world that is crumbling down. Post 3x17 - Countdown.

Stay out of the precinct. Especially where Beckett and Castle are concerned. One-shot, hopefully not too OOC, slight Caskett, 3x11 spoilers if you squint.

In which Castle and Beckett attempt to survive two hours in cold storage with nothing but "mild hypothermia" to show for it. Rating for naughty language.

All her will and senses may succumb to the memory of that night. Post-kiss fic. Probably a 2 or 3-shot. M right now for a few choice words.

Castle and Beckett have been tiptoeing around each other for too long. Will he step up to the plate when it looks like he's going to lose her? And how will she react to his life changing news?

A touch was just the beginning.

Just one touch. That's all it takes. Post 3.06 - 3XK.