Zoe, Queenie, and Nan make contact with a dark spirit trapped in the Academy. Cordelia’s new power brings on a heartbreaking revelation.
TV Series >> AHS: Coven >> 03.06 – The Axeman Cometh – Stills
I suppose the worst case is that it’s a flashback. At least we get to see her lookin’ good.
Based on the preview clip, I think the dark spirit is the Axeman. The voodoo queen thinks he can kill the witches, so she resurrects him. The spell she uses revives our Madison too, since both of their bodies are at the academy. Just a guess.