After Bailey (Chandra Wilson) enlists Shane (Gaius Charles) to find Dr. Webber (James Pickens Jr.), the jealous intern lies to poor Mousey and says she's in charge of seeking out the missing surgeon. Heather heads down into the flooded basement where she finds Webber lying unconscious. Without thinking, she rushes to help him, only to get electrocuted herself.
So is Heather a goner? It could just as easily be Webber, who's been injured and unconscious far longer than Heather. Or maybe the electrocution is a big red herring and the real fatality is someone completely unexpected.
Watch the sneak peek here. Who do you think dies?
Grey's Anatomy returns Thursday, Sept. 26 at 9/8c on ABC.