After the Empty spat Castiel back out, it gave him a restored body—and restored grace. Grace that has triggered a regrowth of his wings. But the process isn't pleasant.

After Castiel nearly destroyed heaven in his fight against Raphael, the angels decide he needs to serve punishment for his crimes. He must be an example, like Lucifer, to make sure no angels do the like again. So they send him to Hell. It's up to Sam and Dean to get him back. S7 AU No Slash (Katabasis Verse #1)

Sam and Dean are working a case in Wyoming, but are distracted by news of a dangerous angel called "Castiel" who they can't remember ever having heard of before. The name seems a little bit familiar, but neither of the boys is sure why. Canon-divergent from 9/09, takes place the following fall. Case fic, amnesia, no slash, friendship/family, angst. NO CRIT PLEASE, thanks

Dean receives a call from Cas about a possible case in his town. Deciding it's worth a look, Dean leisurely drives to Rexford, Idaho, until he receives another call. "...Dean, whatever caused those others to commit suicide… I believe it is affecting me now." His relaxed ride has turned into one with the pedal to the metal. TR: Suicidal Thought

Sequel to Come back again. Cas is gone and Dean tries to cope, while Sam feels helpless as he sees his brother mourn. But is Cas this time really dead? Changing PoVs, First time, eventually Destiel