The Scottish Play—An unusual take on "famously fatherless". (Crossover with Gargoyles)
The Magician—Kevin Ryan's destiny holds more than his future plans anticipate. (Pre-series. Magical realism/urban fantasy AU.) [Teaser]
Vasa Jijri—A crossover with the Elder Scrolls series of games (specifically Skyrim). Barely Castle related (though it stars Kevin, as a kid), but it ties into a planned fusion series.
Which is not an AU so much as it simply happens to concern werewolves.
Evidence to the Contrary—In which Javier assures Kevin that there are no werewolves in Manhattan.
Stupid Questions (And Other Things That Don't Exist)—In which two drunk werewolves wax meta on the supernatural, and apparently everyone's adorable. (Fluff)
Magic Enough in Moonlight—A full-moon weekend in the Hamptons. (Fluff)
Trier of Fact—Angst for no reason (or, Kevin's view of the events which lead up to "Evidence to the Contrary").
(Not So) Secret Santa—There were times when Kevin thought the whole werewolf thing was kind of a drag. (Fluff)
As True as the Sky—Javier answers some of the rumors that have been circulating among the NYPD. (Friendship)
A Once and Future Thing*
Threads of fate, woven and rewoven.
Deja Vu*—"Forever, baby?" (CastlexFirefly)
Jamais Vu*—"I swore an oath of honor never to abandon you." (xover with CastlexThe Eagle)
'Til Underverse Come*—When Riddick crosses the threshold into Underverse, he sees all. (CastlexThe Chronicles of RiddickxVarious)
Keep What You Kill*—Riddick offers answers. Vaako should have been more curious about the questions. (The Chronicles of Riddick)
The Genus* Series:
Vulgar Latin and Xenophilia. (Or, what happens when the Sluggard mistakes John Carpenter's "The Thing" for a romance.)
Eadem Mutata Resurgo*—Most stories have a beginning and an end. Sometimes it's impossible to tell the difference. (Prequel to "Sui Generis".)
Sui Generis*—Javier confessed never expecting Kevin to believe him. Kevin didn't, but somehow, things still wound up spiraling frighteningly out of control...
Duo In Carne Una*—Months after the revelations which challenged everything he knew about his partner—and in the face of his looming wedding—Kevin makes his choice.
The Life* AU
A zombie AU in which an undead minority, called "post-vitals", have been in existence since the early '60s.
Quality of Life*
Part One*/Part Two*
Life Goes On—Love can be a selfish emotion, and loving unconditionally the most selfish of all.
(See more in the Life Series masterpost.)
The Zeitgeist Series
A Castle-Heroes Crossover AU, featuring characters from NCIS.
One Giant Leap—Listen. Javier Esposito has become unstuck in time.
Interlude: One Small Step—Just because you don't believe in ghosts doesn't mean they don't believe in you.
Black Edelweiss—Two weeks after Claire Bennet's televised leap from the Ferris wheel, the 12th handles it's first case delving into the strange world of specials.
Fools Rush In—When Javier went missing, Kevin refused to give up hope. (crossover with Supernatural)
Roach Motel: A Post Modern Tale of Slashy Goodness—A slash fic about slash fic, and the reaction of muses thereto.
Caffeine Induced Madness—A cautionary tale about of the dangers of java, for both characters and those who write them.
Free Fall—Beginnings and endings must often coincide.
Pressure—A coda to Knockout.
Fracture—A coda to Knockout.
No Dominion—Kevin Ryan is given a second chance. Crossover with Phillip Jose Farmer's Riverworld novels.
Women Scorned and Other Natural Disasters—A night of public nudity and misunderstandings shakes the status quo.
12x13—Kevin's dodgy sense of fashion had never gotten him in this much trouble before... (xover with Warehouse 13)
Lessons in Each Other—Oh my god, did I manage to write totally angstless fluff? I did. I did didn't I?
Roadkill on the Highway of Life—History can be a difficult thing to throw away.
Trick or Treat—A new case brings back memories of a Halloween night long ago and events Javier suddenly remembers he had forgotten.
Ghoulies and Ghosties—It's past midnight on their first Halloween together, and Kevin and Javier are finally ready to talk about it. Sort of.
Personal Demons—In a loving universe, the "monster fight" after the disastrous dinner in "Demons" might have gone something like this... (Pre-slash)
Pinned—Because in some way, it always has to be Castle's fault. (St. Patrick's Day)
Of Mice and Men—In which a city mouse visits the country, which predictably leads to trouble, and Javier almost gets eaten by a panther. Crossover with the comic series Fables.
Until Lambs Become Lions—There are things Javier knows about his partner's wife—ex-wife—that Kevin doesn't. (Pre-slash. Crossover with Grimm.) [Teaser]