Metaphysical Gravity by
zoemathemata. Dark Shadows/SPN Fusion AU, Dean/Cas, NC-17, 79000 words.
Summary: A retelling of the gothic soap opera Dark Shadows, vampire Castiel Collins is awakened from his tomb by down-on-his-luck author Chuck Shurley. With Chuck’s help [and blood] Castiel sets out to make a life for himself in Collinsport, restoring his old home and hopefully being reunited with the reincarnation of his former lover, Dean Winchester.
I read this and I didn't want it to end because it's just so good and Castiel as a vampire is ... sensual and the whole thing is absolutely brilliant and chilling and sweet and funny and I'd recommend it even if vampire!fic is not your cup of tea.
And Chuck wrote:
It was the year of our Lord, seventeen hundred and ninety-six and Collinsport, Maine still remembered the Declaration of Independence when the country was divided into Patriots and Loyalists; those who supported the revolution and those who did not. Americans and Tories. But this is not a tale of a colony uprising against a distant master. It is not the story of political upheaval and the subsequent birth of a nation.
This is a story of how far two people will go in the name of love; both of them converging at the same point in horror. One driven by madness and desire and the other by grief and despair. At that time in Collinsport, while it was easy to tell a Whig from a Tory, it was not as easy to distinguish evil living among the good people of Collinsport, and that evil wore a lovely face...