Part Two, Middles: Underwater Cryptography, Hair, Rain and Cake, and Reunion, Summary

Margaret returns to her rooms and thinks about what Miss Winter said. If Emmeline did not kill John-the-dig, that only leaves Adeline. Miss Winter seems so upset by John-the-dig's death. How could she have killed him? Still struggling with this, Margaret climbs into the bathtub, thinking as well about Miss Winter learning to shape the topiary even after she damaged it a few years before. Margaret is confused by these things. In her confusion, she begins to think about the five notes Emmeline spoke the night before and suddenly realizes what they are. The dead go underground. Margaret is sure these are the words, but she does not understand what they mean.

Miss Winter calls Margaret to her room for their next meeting...