 Meanwhile, the citizens of Oz, spurred on by Madame Morrible and Boq's testimony, band together to help rescue Dorothy from the clutches of the Wicked Witch of the West. Glinda has realized Morrible, who can control the weather, is responsible for Nessarose's death, but when she confronts her Morrible tells her that there is blood on her hands as well, and advises her to smile and wave. Glinda flees in horror to warn Elphaba as the angry mob sets out to kill Elphaba. ("March of the Witch Hunters"). Elphaba captures Dorothy, refusing to release her until she relinquishes Nessarose's slippers – the only things left of her dead sister. Glinda travels to Elphaba's castle to warn her of the danger and persuade her to let Dorothy go. Elphaba refuses until she suddenly receives a letter saying that Fiyero has supposedly died. The two women forgive each other for all grievances, acknowledging they have both made mistakes. To help her in her future, Elphaba gives the Grimmerie to Glinda. The two friends embrace for the last time before saying goodbye forever, and acknowledge that they are who they are because of each other ("For Good"). As the Mob Arrives at the Castle Elphaba forces Glinda to hide, and she watches from the shadows as Dorothy throws a bucket of water on Elphaba, who appears to melt away. Grief-stricken, Glinda sees that all that remains of her friend is her black hat and the small bottle of green elixir which she had slept with under her pillow.
