Bryony gradually solves her father's puzzles, some of which involve a maze depicted on the family's arms, the motto being "Touch not the cat". In the book's climax, when they learn that she has married Rob, the twins try to murder Bryony and flood the property so they can sell it for redevelopment. She is saved by Rob, with whom she plans to emigrate, and Francis belatedly shows up, the implication being that he will take over the care of Ashley Court.