Characters & Pairing(s): Sam/Castiel, Crowley, Bobby, Dean
Word Count: 30,692
Warnings: Offscreen body horror
Summary: When Sam leaves his dad and brother, he expects to spend a few weeks working his way across the country to California and the full ride to Stanford that waits for him. He's not expecting to stumble into a strange place called Carterhaugh County, and he's not expecting to accidentally trap himself there with a man named Castiel, who as it turns out, isn't a human at all. Sastiel retelling of Tam Lin.
Link to fic: AO3
Link to art: LJ