So there's a Dark Shadows marathon on right now and it reminded me of a fic I read forever ago. I believe Castiel was the 'Barnabas' character. He awakes from his grave and is a vampire. Meets his relatives who live at the family estate. He meets Dean and begins to court him. Dean lives with his brother Sam. Castiel begins to rebuild his old family home that was burnt down. He allows I think Ben to play at the burnt remains as Ben says he can see a ghost which I think is Anna. She was Castiel's sister. There was something about a witch or voodoo and I think it had something to do with Ruby. Hope someone remembers this.