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Neighborhood Watch by SweetChi reviews
Already worn down by a nightmare of a case, Kevin Ryan is less than thrilled by the unending construction in the apartment above his. Until he meets who's moving in, that is...
Crossover - Buffy: The Vampire Slayer & Castle - Rated: T - English - Mystery - Chapters: 3 - Words: 3,854 - Reviews: 1 - Favs: 2 - Follows: 7 - Updated: 44m - Published: 8/29 - Buffy S., Kevin R.
Grimm Reflections by The Black Sluggard reviews
A close call on the job exposes a hidden world that has always existed just out of sight―and leaves Kevin Ryan viewing the people closest to him in a whole new light... Sequel to "Until Lambs Become Lions". Slash, Ryan/Esposito. WIP
Crossover - Castle & Grimm - Rated: T - English - Romance/Fantasy - Chapters: 7 - Words: 20,479 - Reviews: 11 - Favs: 8 - Follows: 12 - Updated: 6h - Published: 2/9 - [Kevin R., Javier E.] Nick B., Hank G.
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: 1 - Words: 2,060 - Reviews: 3 - Favs: 5 - Follows: 13 - Published: 8/29 - Leroy Jethro Gibbs, Ziva D., Rick C., Kate B.
Friend in Me by qjhayes11 reviews
One shots of the friendship between Kate Beckett and Jane Rizzoli. Everything from sports rivalries, and hilarious moments to family trouble and fighting for their lives in the ER. In series fun from both Castle and Rizzoli & Isles. Episode Titles for placement.
Crossover - Castle & Rizzoli & Isles - Rated: T - English - Friendship/Family - Chapters: 12 - Words: 50,662 - Reviews: 25 - Favs: 29 - Follows: 48 - Updated: 8/28 - Published: 10/25/2014 - Kate B., J. Rizzoli
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: 2 - Words: 12,021 - Reviews: 1 - Favs: 1 - Follows: 3 - Updated: 8/27 - Published: 8/20 - Patrick J., Teresa L., Rick C., Kate B.
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: 25 - Words: 61,821 - Reviews: 69 - Favs: 29 - Follows: 64 - Updated: 8/23 - Published: 1/29 - Angel, Faith L., Rick C., Kate B.
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.
Crossover - Buffy: The Vampire Slayer & Castle - Rated: T - English - Adventure/Humor - Chapters: 3 - Words: 40,726 - Reviews: 6 - Favs: 24 - Follows: 32 - Updated: 8/23 - Published: 8/8 - Buffy S., Rick C., Martha R.
Castle and Percy Jackson Meet by ashisaur10
What if Percy and his sister are running from the CIA, and they turn to the New York Police Dept. for help. With Castle and Beckett protecting them, they wonder if their world will ever be saved.
Crossover - Percy Jackson and the Olympians & Castle - Rated: K+ - English - Humor/Hurt/Comfort - Chapters: 1 - Words: 245 - Favs: 1 - Follows: 1 - Updated: 8/22 - Published: 8/20 - Percy J., OC, Rick C., Kate B.
fandom truth or dare by princessSunsetShimmer
it a truth or dare from mlp fim, castle, gone , percy jackson,heroes of olympus rated t just in case
Crossover - Percy Jackson and the Olympians & Castle - Rated: T - English - Chapters: 1 - Words: 259 - Published: 8/22
A Whole New World Of Death by smartgirl13579 reviews
It's just a normal day in the 12th precinct... and suddenly the supernatural is sitting in the interrogation room. When Nico and his friends crash NYPD headquarters, Esposito seems to know them. Then he walks into a wall and disappears. Instantly, the detectives are thrown into a mystery that they don't know they can solve. AU.
Crossover - Percy Jackson and the Olympians & Castle - Rated: K - English - Supernatural/Mystery - Chapters: 5 - Words: 9,009 - Reviews: 7 - Favs: 1 - Follows: 7 - Updated: 8/21 - Published: 4/19
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: 9 - Words: 25,676 - Reviews: 4 - Favs: 10 - Follows: 11 - Updated: 8/19 - Published: 10/8/2014 - Kate B., Rick C., Lux C.
My Heart by dream vs nightmare reviews
"I do hope you don't mind sharing, Detective." A wave of her perfume rolls over him, then, subtle and sweet and warm as his hand finds her waist and pulls her close under his umbrella, close enough that he can smell the lingering shower gel on her skin and shampoo in her hair. "Uhm, no…" She murmurs, then, blinking at him once, twice, when she says, "No, not at all."
Crossover - Castle & Forever - Rated: K+ - English - Romance/Humor - Chapters: 1 - Words: 1,693 - Reviews: 2 - Favs: 3 - Follows: 1 - Published: 8/18 - Javier E., Lanie P., Henry M., J. Martinez - Complete
Super Distracting by The-KLF reviews
Prompt from seilleanmor: Instead of Nathan it was Castle who did the Muppets commercial, and Kate gets jealous of Miss Piggy. #CastleFanficMonday
Crossover - Castle & Muppet Show - Rated: K - English - Humor/Crime - Chapters: 1 - Words: 600 - Reviews: 11 - Favs: 11 - Follows: 5 - Published: 8/17 - Rick C., Kate B., Miss Piggy - Complete
Once Upon a Time in the City of New York by Laura Picken reviews
Vincent and Catherine discover that they are far from alone in the fight against evil in New York City. An AU set in my "Guardians of Shangri La" universe.
Crossover - Castle & Beauty and the Beast, 2012 - Rated: T - English - Fantasy/Adventure - Chapters: 2 - Words: 4,205 - Reviews: 5 - Favs: 5 - Follows: 7 - Updated: 8/16 - Published: 8/14
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: 5 - Words: 8,136 - Reviews: 3 - Favs: 6 - Follows: 12 - Updated: 8/15 - Published: 7/21 - Sam W., Dean W., 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: 35 - Words: 66,851 - Reviews: 68 - Favs: 28 - Follows: 44 - Updated: 8/14 - Published: 4/16/2014 - Rick C., Kate B., Captain America/Steve R., Agent Phil Coulson
World's Greatest Detective: Genesis by Katrina Castillo reviews
It's been three years since the Batman first appeared to protect Manhattan, and he's grown a reputation within both the criminal underground and the legal system. Richard Castle, the man behind the mask, has started to feel the burden of living a double life. But when he crosses paths with Det. Beckett, he finds a new muse and begins to see just what the NYPD is capable of.
Crossover - Batman Begins/Dark Knight & Castle - Rated: T - English - Crime/Drama - Chapters: 12 - Words: 44,057 - Reviews: 62 - Favs: 37 - Follows: 40 - Updated: 8/9 - Published: 8/2/2014 - Rick C., Kate B., Alexis C., Roy M. - Complete
Richard Castle promised a Terminator by TFALokiwriter
Richard Castle made a promise to a Terminator two years ago regarding its parts. This Terminator has a name: T-11. T-11 now lives with Alexis, well, not under the circumstances that one can picture. In reality T-11 has blended into human life and wed Alexis after a year of dating. Where does our plot begin? Oh yes; the murder of a Resistance Soldier draws Castle in.
Crossover - Terminator & Castle - Rated: T - English - Chapters: 15 - Words: 7,397 - Favs: 1 - Follows: 1 - Published: 8/8 - Terminatrix, OC, Alexis C., Rick C. - Complete
Richard Castle is Skynet's target by TFALokiwriter
A story in which Richard Castle is the target of a T-1000 sent from Skynet to Terminate him, however, he thankfully has T-11 for some help.
Crossover - Terminator & Castle - Rated: T - English - Chapters: 11 - Words: 5,616 - Favs: 1 - Follows: 1 - Published: 8/4 - OC, Rick C., Kate B., Alexis C. - 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: 1 - Words: 826 - Reviews: 2 - Favs: 2 - Follows: 5 - Published: 8/2 - T. Brennan, S. Booth, Kate B., Rick C.
Conversations in a Bookshop by T-man626 reviews
While visiting Colorado Springs, Kate stumbles into a lovely little shop run by some familiar faces.
Crossover - Castle & Warehouse 13 - Rated: K - English - Friendship - Chapters: 1 - Words: 2,012 - Reviews: 4 - Favs: 1 - Follows: 4 - Published: 8/1 - Kate B., Myka B., Helena G. W. - Complete
Richard Castle and the Time Displacement Field by TFALokiwriter
Richard Castle has everything; Beckett, his career, and family. But what if he can gain more by one simple incident? Maybe not but it may give him memories he will never forget coming into contact with The Resistance and John Connor himself. This is about Richard Castle and the Time Displacement Field.
Crossover - Terminator & Castle - Rated: T - English - Humor/Sci-Fi - Chapters: 8 - Words: 3,954 - Published: 7/31 - John Connor, OC, Rick C. - Complete
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: 19 - Words: 28,664 - Reviews: 53 - Favs: 33 - Follows: 68 - Updated: 7/29 - Published: 11/6/2014 - [Kate B., Rick C.] Emma S., Henry Mills
Manehattan Takes Rarity by EqualisE reviews
A white unicorn lay upon the heaps of waste, clothed in a gorgeous red dress. Although her indigo mane and attire were disfigured, she still seemed royal, almost like an Alicorn princess—if not for the two gaping holes in her chest and the darkened blood smeared on her legs and hooves. It's up to Beckett and Castle to solve the case. (Set in Season 3 of both shows.)
Crossover - My Little Pony & Castle - Rated: T - English - Crime/Adventure - Chapters: 8 - Words: 24,277 - Reviews: 1 - Favs: 3 - Follows: 3 - Updated: 7/17 - Published: 3/24 - Rarity, Princess Luna/Nightmare Moon, Rick C., Kate B. - Complete
Paths Crossed by CrimeShowFanatic reviews
It's been two years since Ziva left. Since then, Tony hasn't been himself. What will he do when he finds out she's in New York living with the one and only Richard Castle. Little does he know she has a surprise for him.
Crossover - NCIS & Castle - Rated: K+ - English - Crime/Family - Chapters: 13 - Words: 20,136 - Reviews: 27 - Favs: 30 - Follows: 57 - Updated: 7/13 - Published: 5/6/2014 - Tony D., Ziva D., Rick C., Kate B. - Complete
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