The East Palace

The heirs keep dying. The king sends for Gu-cheon, who can walk into the place where the dead keep house, and tells him to end it or not leave the grounds. Saeng-gang is a court lady who hears them. She is also keeping her own list of who in that palace should still be alive. They go into the pond because that is how you get there. The curse has a name. The people who need it have names too.