Kate examines a box of old books with numerous signs of mold and insect damage that was acquired from Orton Hall.
She finds a variety of books, including gardening encyclopedias, biology textbooks, and literary works such as Sherlock Holmes and Shakespeare.
A book of Grimm's Fairy Tales catches her attention, and she discovers a hidden, handwritten letter inside it.
The letter is addressed to family members and an apology for an unnamed wrongdoing, expressing a desire to be buried under a beech tree in the garden.
The letter reveals distress over memories of something terrible involving someone named Frederick Ayres, hinting at sexual assault.
Kate identifies with the letter's sentiment based on her experiences and resolves to find out more about Frederick Ayres.
A quick Google search on Frederick Ayres points to an article about a persistent fly infestation at Orton Hall, linking Frederick to the horrors mentioned in the letter.
Kate concludes that Frederick is the Viscount of Orton Hall and contemplates the grim possibility that Violet's father knew of the assault but chose to disbelieve or ignore it.
The chapter ends with Kate's reflection on her great-aunt's strength and independence, affirming her determination to protect her own new life and future child.