Author has written 7 stories for Castle.
Some of my favorite LJ authors who write amazing Castle fics:
Author: Missy Meggins
(This is one of my favorite stories of hers: The Confusion of Straight Lines)
Title: She and Him (and her) by alias424
Story: The One In Which There Are No Pants by Medie
Author: Literary Critic
Author: Floating Amoeba, Story: Hope for Now - delicious NSFW oneshot