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Not Just a Cop by J.D. Cunegan reviews
Kate Beckett is one of the NYPD's brightest homicide detectives, but she also harbors a dark secret - one that not even she was aware of until recently. She leads a double life of sorts, subjecting herself to horrors and conspiracies unlike anything else in the world. And once she saves bestselling author Richard Castle from certain death, things get even hairier.
Crossover - Buffy: The Vampire Slayer & Castle - Rated: T - English - Supernatural/Mystery - Chapters: 29 - Words: 73,331 - Reviews: 78 - Favs: 42 - Follows: 78 - Updated: 2/4 - Published: 1/29/2015 - Angel, Faith L., Rick C., Kate B.
Not Your Average Case by superwhofilesjackson reviews
While on a hunt, the Winchesters meet (more like have an unpleasant encounter) Beckett and team. For supernatural, it takes place in season 5, and for castle, some where in season 4. rated T for safety. *my summaries suck. just read the story!*
Crossover - Supernatural & Castle - Rated: T - English - Supernatural - Chapters: 7 - Words: 12,355 - Reviews: 11 - Favs: 15 - Follows: 35 - Updated: 2/3 - Published: 7/21/2015 - Sam W., Dean W., Rick C., Kate B.
Close Encounters of the Fourth Kind: Clash Of Worlds by OnkelJo reviews
After settling into my new life in the Castleverse, I thought I could catch my breath. I rarely was so wrong. I have to work with unexpected allies who shouldn't even be here to stop the world we know from unraveling. Just my luck, eh? Castle Winter Hiatus 2014 Ficathon Entry. Castle/Chuck/Eureka. Humorous Self Insert (SI) with actual plot ;) Cover Art by the lovely @dtrekker :)
Crossover - Chuck & Castle - Rated: T - English - Sci-Fi/Humor - Chapters: 14 - Words: 34,052 - Reviews: 15 - Favs: 15 - Follows: 23 - Updated: 2/1 - Published: 12/11/2014 - Chuck B., Alexis C., OC, Rick C.
The Wizard and the Writer by Shinysavage reviews
Murder is run of the mill to Richard Castle and Detective Kate Beckett. But when their newest case arrives with some intriguing anomalies, they might have to request help from an entirely new kind of expert. Written for DLP's Secret Santa 2015. Set mid-series Castle season 4, post-White Night for Dresden.
Crossover - Dresden Files & Castle - Rated: T - English - Mystery/Humor - Chapters: 1 - Words: 2,374 - Reviews: 5 - Favs: 6 - Follows: 9 - Published: 2/1 - H. Dresden, K. Murphy, Rick C., Kate B.
Age of Miracles by Laura Picken reviews
The Guardians, the Avengers, and a 'few' of their friends and allies go to war against HYDRA and end up scouring the far reaches of the galaxy to protect the six Infinity Stones. AU to Avengers 2 and Season 2 of Agents of SHIELD.
Crossover - Castle & Avengers - Rated: T - English - Adventure/Fantasy - Chapters: 36 - Words: 70,274 - Reviews: 71 - Favs: 28 - Follows: 44 - Updated: 1/31 - Published: 4/16/2014 - Rick C., Kate B., Captain America/Steve R., Agent Phil Coulson
Jedi Castle by The Dark Scribbler reviews
Rick Castle has had a hell of a day. Kidnapped, then rescued by a mysterious hooded figure...
Crossover - Buffy X-overs & Castle - Rated: K - English - Adventure/Humor - Chapters: 5 - Words: 9,256 - Reviews: 39 - Favs: 83 - Follows: 58 - Updated: 1/31 - Published: 7/21/2014
X Marks the Spot by Caramelapple27 reviews
A serial killer the Castle team has been investigating comes to Austin and the FBI and 12th precinct have to share the investigation leading Beckett, her team, and Castle to meet Supervisory Agent Cho and his team including Jane and Lisbon. Story set after Mentalist episode White Orchids.
Crossover - Mentalist & Castle - Rated: K+ - English - Family/Mystery - Chapters: 10 - Words: 47,642 - Reviews: 20 - Favs: 7 - Follows: 18 - Updated: 1/25 - Published: 8/20/2015 - Patrick J., Teresa L., Rick C., Kate B.
Broken by LilyCaroline17
What happens when certain New York detectives meet the BAU team from Virginia. Will sparks fly? Will there be love or will there be heartbreak or both? Read to find out! Summary is bad but I hope the story will be great!-Emily
Crossover - Criminal Minds & Castle - Rated: T - English - Hurt/Comfort/Friendship - Chapters: 1 - Words: 1,354 - Follows: 3 - Published: 1/25 - E. Prentiss, Jennifer J./JJ, Rick C., Kate B.
Once Upon A Castle by 3detectives1writer reviews
When Castle and Beckett catch an odd case, Castle finds a story book that leads them to Storybrooke. Set in Season 3 Castle and Season 4 of OUAT. (Fic cover edited by myself)
Crossover - Castle & Once Upon a Time - Rated: T - English - Mystery/Fantasy - Chapters: 24 - Words: 36,482 - Reviews: 60 - Favs: 47 - Follows: 78 - Updated: 1/23 - Published: 11/6/2014 - [Kate B., Rick C.] Emma S., Henry Mills
Light Wave by RhiStar reviews
Basically the show Castle with Lux. It takes place around the sixth season. It is told with the stories you know from the shows twisted in the new reality. Hope you enjoy it and don't forget to write a review to help me find a path.
Crossover - Castle & Life Unexpected - Rated: K+ - English - Drama/Family - Chapters: 11 - Words: 32,860 - Reviews: 6 - Favs: 11 - Follows: 17 - Updated: 1/19 - Published: 10/8/2014 - Kate B., Rick C., Lux C.
Don't Blink, Kate Beckett by caskettwriter41319 reviews
When the NYPD team is called to a case involving a doctor, a public call box that never before existed, and a victim identical to one of their only two suspects, Kate discovers just how far she's gone in over her head this time...and just how much bigger the universe might be than she originally thought.
Crossover - Doctor Who & Castle - Rated: K+ - English - Crime/Adventure - Chapters: 3 - Words: 5,608 - Reviews: 2 - Favs: 5 - Follows: 11 - Updated: 1/19 - Published: 11/15/2015
A Charmed Murder by ChrisPerryRyan11 reviews
Co-written with the shaymazing Detective.Rysposito. AU. Dead body on Castle's door takes the team to Sunny San Francisco, home of the Charmed Ones. My 1st xover with these 2 fandoms, 2nd overall. Chris Centric as well as The CO's. The next gen, husbands, Andy and Prue will also be appearing with Darryl too.
Crossover - Charmed & Castle - Rated: T - English - Mystery/Supernatural - Chapters: 4 - Words: 4,765 - Reviews: 7 - Favs: 4 - Follows: 12 - Updated: 1/14 - Published: 10/29/2015 - Chris H., Barbas, Kevin R., OC
Shared Secrets by badly-knitted reviews
Castle and Beckett team up with Laytner and Maclean, two New York detectives from another precinct to solve a case. Written for Challenge #23: Secrets at fan flashworks.
Crossover - FAKE & Castle - Rated: K+ - English - Romance/Crime - Chapters: 1 - Words: 2,057 - Reviews: 1 - Published: 1/7 - [Rick C., Kate B.] - Complete
Jenny by ChrisPerryRyan11
AU of how Kevin&Jenny met. Crossover with Charmed. Rated T for brief high emotions and character peril. Summary: Kevin Ryan always knew he was a witch...
Crossover - Charmed & Castle - Rated: T - English - Romance/Supernatural - Chapters: 1 - Words: 2,127 - Published: 12/9/2015 - [Kevin R., Jenny oD.] Paige M., Darryl M. - Complete
Uncle Richard by Dragons-Twilight1992 reviews
Richard Castle was actually Richard Potter twin of James Potter and Uncle to Harry Potter. Richard couldn't take the stress of losing his brother and left the wizarding world shortly after and started a new life in the USA. But returned when Harry turned 11. Now it is 2013 and Harry wants to visit his Uncle in the States. What is going to happen?
Crossover - Harry Potter & Castle - Rated: T - English - Family/Drama - Chapters: 1 - Words: 1,729 - Reviews: 9 - Favs: 41 - Follows: 51 - Published: 12/8/2015 - [Kate B., Rick C.] [Harry P., Ginny W.]
Girl Meets Castle by tracey.costelle reviews
Maya works with Beckett and the gang, she hasn't spoken or seen Riley in 4 or 5 years, and has no family left except Lucas and the gang at the 12th precinct. Maya is turning 21 and the GMW gang get back together, but not for what they originally planned. it will include most characters from both shows.
Crossover - Castle & Girl Meets World - Rated: T - English - Chapters: 1 - Words: 1,391 - Reviews: 2 - Favs: 2 - Follows: 4 - Published: 12/2/2015 - Alexis C., Kate B., Maya H., Lucas F.
Mafia Heat by KonohasBlackReaper reviews
There is a murder in Manhattan. Castle and the gang finds themselves involved in the underbelly of the Mob world. One of the victims is of Italian descent and before they know it, F.B.I and the Vongola Guardians are involved. Yamato finds himself dispatched to get to the bottom of the matter. Can the killers remain unscathed with both the Law and the Mafia out to find them?
Crossover - Katekyo Hitman Reborn! & Castle - Rated: T - English - Mystery/Humor - Chapters: 4 - Words: 16,865 - Reviews: 71 - Favs: 141 - Follows: 175 - Updated: 12/1/2015 - Published: 8/9/2013 - T. Yamamoto, Rick C., Kate B., Alexis C.
Once upon a castle by GiselleHlv reviews
Regina y Emma y su Roadtrip a Nueva York, un objeto de la cripta de Regina ha desaparecido, pero las cosas se van a torcer para ellas cuando tengan que ir a buscarlo.
Crossover - Castle & Once Upon a Time - Rated: K - Spanish - Mystery/Romance - Chapters: 12 - Words: 24,242 - Reviews: 59 - Favs: 14 - Follows: 19 - Updated: 11/22/2015 - Published: 6/3/2015 - Complete
Untill we meet again by AriaMcGee
Tempe, Castle and Maddie are all sibblings however none biologically related. Maddie has always his her real career well yet one dead Semi-decompsed marine in New York will change that forever. Will there love rise above that? or will it come crumbling down?
Crossover - NCIS & Castle - Rated: K - English - Chapters: 2 - Words: 1,066 - Favs: 1 - Follows: 3 - Published: 11/9/2015 - Tony D., Rick C.
New York avec toi by Mine de Crayon reviews
Kate Beckett et Brooke Davis se retrouvent à New York après ne pas s'être vu pendant 15 ans
Crossover - One Tree Hill & Castle - Rated: K - French - Friendship/Humor - Chapters: 1 - Words: 1,084 - Reviews: 3 - Favs: 1 - Follows: 1 - Published: 10/11/2015 - Brooke D., Kate B. - Complete
Richard Castle, Watcher by Starfox5 reviews
Richard Castle did follow his girlfriend Kyra Blaine to London when she left him, and his life changed one evening in a pub there. He didn't know that joining a group of vampire hunters would one day lead him to Sunnydale, and later to the 12th Precinct.
Crossover - Buffy: The Vampire Slayer & Castle - Rated: T - English - Adventure/Humor - Chapters: 10 - Words: 100,056 - Reviews: 37 - Favs: 77 - Follows: 112 - Updated: 10/11/2015 - Published: 8/8/2015 - Buffy S., Vi, Rick C., Kate B.
Double Lives by J.D. Cunegan reviews
Bestselling mystery writer Richard Castle and NCIS Special Agent Leroy Jethro Gibbs are as different as two men can possibly be. Yet they have one thing in common without even realizing it - until the body of a young Navy corporeal unravels the mystery and puts everyone's life in danger. Crossover AU.
Crossover - NCIS & Castle - Rated: T - English - Mystery/Angst - Chapters: 5 - Words: 11,881 - Reviews: 39 - Favs: 37 - Follows: 77 - Updated: 10/8/2015 - Published: 8/29/2015 - Leroy Jethro Gibbs, Ziva D., Rick C., Kate B.
The Tyranny of a Rational Mind by Saul Good reviews
Alexis and Castle approach a problem with logic.
Crossover - Buffy: The Vampire Slayer & Castle - Rated: T - English - Adventure/Family - Chapters: 3 - Words: 5,450 - Reviews: 10 - Favs: 12 - Follows: 30 - Updated: 9/28/2015 - Published: 3/30/2014 - Rick C., Alexis C.
Christmases Past by RPGgirl514
Detective John Sullivan gets the call for a four A.M. body drop and nearly runs over a drunk girl. Instead he finds a kindred spirit in Kate Beckett.
Crossover - Castle & Frequency - Rated: K+ - English - Angst/Crime - Chapters: 1 - Words: 3,819 - Favs: 1 - Follows: 1 - Published: 9/27/2015 - Kate B., Johanna B., John S., Satch D. - Complete
The Haunt in the House by F.r.i.e.n.d.s. A.d.d.i.c.t.96 reviews
Halloween is the scariest time of year and the time when the craziest crimes happen. So when Beckett and Castle get a case they're not used to, Booth and Brennan are called in to help solve the case.
Crossover - Bones & Castle - Rated: K+ - English - Suspense/Drama - Chapters: 2 - Words: 1,366 - Reviews: 4 - Favs: 7 - Follows: 17 - Updated: 9/22/2015 - Published: 8/2/2015 - T. Brennan, S. Booth, Kate B., Rick C.
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