Title:
Hellbound
Fandom: Supernatural
Rating: Mature
Characters: Sam Winchester, Dean Winchester, Castiel, Lucifer (Supernatural)
Additional Tags: Soulless Sam Winchester, Season/Series 06, Alternate Universe - Canon Divergence, Hell Trauma, Tortured Sam Winchester, Angst with a Happy Ending, Amnesiac Dean Winchester
Summary: Sam is in Hell, and then he isn't. He's standing on a sidewalk with a stranger looking back at him-a stranger that has his face.
Written for these two prompts: The guy says he's Dean's brother, but Dean's an only child. He doesn't even know any "Sams." / Dean can’t see or hear or feel Sam, even though Sam is right there. Sam about loses his mind trying to keep Dean from doing crazy reckless stuff-some to solve where Sam is, some just because Dean is Dean
My 2020 spn-summergen fic! Featuring soulless!Sam, disembodied soul-Sam and amnesiac Dean.
Read it on AO3