So I've exhausted my search powers and I need help.
I read a Supernatural/Criminal Minds story a while back and now can't find it anywhere. In it Dean had been forced to kill Sam because he couldn't escape Lucifer's possession. He gets arrested and imprisoned, I think he basically gave himself up without Sam alive anymore. Dean doesn't talk to anyone, but one of the guards had a soft spot for him. A few years later, the BAU were working on a case the couldn't figure out. Someone suggested interviewing Dean since serial killers make the best profilers. He eventually talks to them and, I think, helps solve the case.

With all I remember you'd think I'd be able to find it, but alas, I can't. Also does anyone have any good Crowley/Gabriel(Loki) stories? Friendship or slash, both are great.
Thanks in advance, you guys are awesome.