Supernatural Story Finders

Okay, I would like get some help again... I have the worst luck in the whole world. I looking for two specific fic.

1# I saw a fanfic months ago what immediately caught me right and then, but that was a Criminal Minds crossover, so I saved it for later, because I never saw any episode from CM. Some weeks ago I started the season06, so I wanted to start that fic too (finally!), but god, I can't find it anywhere. I already looked trough all of my place where I could save, I looked for sites, rec lists, but always nothing. This fic was a reason why I jump in a new fandom and I lost it. 😡 -.-
· it was a multichaptered novel
· human setting, mechanic Dean, ?agent? Cas
A serial killer kidnapped Dean and the BAU trying to find him in time, before the killer kill him too. There was lot of torture (hurtDean) and I think Cas was a BAU agent. Sam was a worried brother.

2# It's already a bit of foggy. I read this fic long-long time ago, some things I remember from it,
· it was a multichaptered novel
· in SPN universum
· in the bunker
· fallen(human) Cas
· Destiel or pre-destiel
In one of scene Cas was possessed by a demon (Abbadon maybe?, but I'm sure as hell the demon was female) and she tied down Dean, but not to some table, I think to someting what kept Dean sitting and vertically. They was in some room, maybe in a demontrap and maybe they wanted to trapping the demon, I don't know sure, but thing went down. The demon beat Dean up (a bit), but mostly tortured him with a knife, cutting him lot of place and deep, and she enjoyed the fact she could do in with Cas face, this hurt Dean the most. Then Cas expelled the demon from inside: he kept saying inself the Exorcism and the demon had to leave. I think she was very suprised and angered, and she threatened Cas to kill him if he expell her, but Cas wanted to protect Dean, no matter what. He was hurt because Dean got hurt by his hand, and the demon hurt him physically when she got expelled.
After this Dean can't trust in Cas anymore, he want but can't, no matter Cas apologized and he was in physically hurt shape because of the expelling. Emotionally both was hurt. Sam talked with Dean about Cas, his state and how hard is this for Cas too. I think this talking happened in Dean's room.

I hope somebody can show mercy on me and can help find it.
Also I hope I got some help with !!this post!! too, some of it is very important to me.

Okay, I can't find tags like torture, human Castiel (for any human setting AUs), possessed Castiel (so I used the demon!Castiel, what isn't fit but this is all what we have.)