Looking for a specific Case Fic/other recs

[cherry916]

I am looking for a specific fic that I swore Khannakorossy wrote but I can't seem to find it. I want to say it was set in season 7 or 8 and it's a fic where a ghost is making people go through a room with all sorts of knives/sharp instruments while blindfolded to save the one they love, who in this case for Sam is Dean tied up in a chair unable to communicate to Sam at all until he makes it through the end. The boys discover that the ghost had to go through that with his sibling and it was a fucked up thing their Dad did. Dean just wants Sam to give up on him but Sam won't. I can't for the life of me find this fic again so any help would be appreciated.

I am also looking for recs of fics where it deals with Sam's trauma relating to Lucifer. Can be set in any season and can get into graphic things such as non-con and stuff. I really just want to read some fics where it deals with Sam's trauma, or talks about what Sam went through.