So I read this one really good fic while I was obsessed with blind!sam, I'm pretty sure it was sett in season 8, Dean had just gotten out of Purgatory but he couldn't find Sam. Meanwhile Sam had been kidnapped along with Jody Mills maybe? Anyway. he was kidnapped and being tortured by Missy (the little girl from the crazy family in season 1) she was all grown up and angry that her family was killed, she was working with some other people vampires or demons I think. She cut out Sam's eyes I think, I know he ends up blind and eventually Dean rescues him. There might have been non-con?