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Castiel’s past is going to come back to haunt him in an early February episode of SUPERNATURAL. Alicia Witt guest stars as Lily, a seemingly immortal witch, in “Lily Sunder Has Some Regrets”.

In the episode we learn that over a century ago Castiel and a band of angels murdered Lily’s family. Since then, Lily has been stepping herself in black magic and honing her powers, planning for her revenge. Once Castiel gets wind of what’s happening, he turns to the Winchesters for help in ensuring that Castiel does not become Lily’s latest victim. But did Cas and his squad of angels really murder Lily’s family or is there more to this story?

Browse through photos above for the February 2 episode of SUPERNATURAL airing at 8:00 p.m. ET/PT on The CW.