Amnesia fic

[valory_hope]

I very recently read a story where Dean, Sam, and Cas all awoke with amnesia. They're locked in a room, which might have been in an abandoned mental asylum (not sure of this). Steel door, I think. When Dean and Sam finally manage to break out of the room, they find that Cas can't leave. The story was posted in chapters, and I'm not sure if it was complete or not. I can't remember the title, author, or anything else. Please help me find it again!