The Book of Monsters Symbol in The Children on the Hill: Meaning, Recurrence, and Study Questions

What the Book of Monsters Is and How It Was Made

The Book of Monsters is a handmade illustrated notebook created by the children of the Hildreth household in 1978. It began as a black three-ring binder Gran gave them from the Hillside Inn, originally labeled ACCOUNTING, 1973. Vi and Eric pasted a new label over the spine reading BOOK OF MONSTERS, and the cover credits read THE BOOK OF MONSTERS by Violet Hildreth, Illustrations by Eric Hildreth. After Iris joins the Monster Club, Vi adds and Iris Whose Last Name We Don't Know to the cover, giving the newcomer a place in the project.

The division of labor is clear: Vi does the writing, Eric does the drawings. Eric's cover illustration depicts his favorite monster, a chimera—a fire-breathing creature part lion, part goat, part serpent. Inside, the book catalogs vampire lore, monster-hunting rules, a wendigo (described as creatures that were human once and now eat people), and a werewolf (humans who transform on full moons, sometimes without knowing they are one). The book lives in a scuffed leather briefcase kept under the folding table in the children's secret clubhouse, alongside monster-hunting gear: leather gloves, a compass, a magnifying glass, a flashlight, binoculars, a Swiss Army knife, wooden stakes, and a small backpack.

The Book as an Invitation to Belonging

When Iris arrives at the house in May 1978—a silent, bruised girl in hospital pajamas with a shaved head and a thick red scar running ear to ear—Vi introduces her to the Monster Club as a way of bringing her in. The book is central to that induction. In the clubhouse, Eric shows Iris the pages, and Vi asks her to write down her favorite monster. Iris, who holds the marker wrong and writes in messy block letters, draws a rectangle with a smaller rectangle inside and two small circles, then writes MNSTR. Vi doesn't understand the drawing, but the image is significant: it is a door, and Vi later recognizes a matching door in the B West basement of the Inn when she breaks in to search Gran's records. Iris's drawing is the first trace of the trauma she cannot articulate—the room where she was held, strapped down, and subjected to electroconvulsive therapy.

The book also becomes a record of Iris's tentative entry into the family. By mid-June, Vi reports to Gran that Iris is helping with the monster book, though she keeps the Monster Club itself secret. The book functions as a shared artifact that binds the three children together in a world of imagined monsters—a world that will prove far less frightening than the real one Gran has built in the Inn's basement.

The 2019 Rediscovery

The Book of Monsters resurfaces forty years later. In August 2019, Lizzy—now an adult monster-hunter and podcaster, formerly Iris—finds a worn copy of the book in a leaning stone tower on Chickering Island, credited to Violet Hildreth and Iris, illustrated by Eric Hildreth, dated 1978. Nearby lies a cloth doll with a stitched face, dressed in denim shorts, a black hoodie, and Converse-style sneakers, with real blond hair tipped purple sewn into its head—matching the missing girl Lauren Schumacher's hair and clothes.

The book has become evidence. It connects the childhood world of the Monster Club to the present-day disappearances of teenage girls on full moons. When Skink, the constable's son, reads the book, he deduces that the monster Lizzy has been hunting is actually her sister. And crucially, the book now contains something it did not have in 1978: a new note added at the end by the monster herself.

The New Message

The added pages transform the book's meaning. In 2019, Lizzy reads the monster's message: the monster claims she saves girls because she couldn't save Iris, and asks Lizzy to come home. The book, once a childhood catalog of imaginary creatures, becomes a direct communication from a real one—Violet Hildreth, who was revealed in 1978 to be Patient S, the child Gran subjected to experiments, hypnosis, and fabricated memories. The monster's note reframes the disappearances: the girls are not victims but rescued people given new identities. Vi explains in the basement confrontation that she rescues girls in dire situations and offers them second chances through a network of benefactors, and that to be reborn, one must die and cut all ties.

The book's transformation mirrors the novel's larger movement from childhood fantasy to adult reality. The monsters the children cataloged—wendigos, werewolves, vampires—were stand-ins for the real horror in their own house. The book's new message makes that explicit: the monster is not a creature of folklore but a person, and the book is her way of reaching out to the sister she lost.

Character and Theme Connections

The Book of Monsters is inseparable from the novel's central questions about identity. Vi, who wrote the book, is revealed to be Patient S—the child Gran tried to erase and remake. The book she authored as a child becomes, in adulthood, a document of her own monstrous self-conception. The identity-as-a-constructed-and-erasable-thing theme runs through the book's very material: a binder labeled ACCOUNTING, 1973 is relabeled BOOK OF MONSTERS, just as Gran relabels and remakes the children in her care.

The book also embodies monstrosity-as-a-matter-of-perspective. To the children, the book is a record of creatures to hunt and fear. To Vi as an adult, it is a record of her own nature. To Lizzy, it is both a childhood treasure and a warning. The same object carries entirely different meanings depending on who holds it and when.

The transformation-through-symbolic-death theme is also present in the book's 2019 function. The monster's message—that to be reborn one must die—is written in the same book that once cataloged werewolves who transform on full moons. The book becomes a kind of instruction manual for the transformation Vi offers the girls she rescues.

Finally, the book is a vehicle for memory-false-memory-and-the-haunting-past. When Lizzy reads it in 2019, the text triggers memories of her childhood as Iris—Gran bringing her home, the grandchildren teaching her everyday skills, the monster club, her drawing of the door. The book is a physical link to a past that was partly fabricated, and it forces Lizzy to confront what was real and what was invented.

Study Questions

1. Why does Iris draw a door and write MNSTR when asked to contribute to the Book of Monsters?

Iris's drawing is the first articulation of her trauma. The rectangle-within-a-rectangle image is a door, and Vi later recognizes a matching door in the B West basement of the Hillside Inn—the room where Iris was held, strapped down, and subjected to electroconvulsive therapy. Iris cannot yet name what happened to her, but the drawing encodes it. The book, meant to catalog imaginary monsters, inadvertently records the real one.

2. How does the Book of Monsters change meaning between 1978 and 2019?

In 1978, the book is a childhood project—a catalog of folklore and monster-hunting rules created by Vi and Eric, then extended to include Iris. It represents belonging, imagination, and the children's shared secret world. In 2019, it becomes evidence in a missing-person case, a clue that connects the childhood Monster Club to the disappearances of teenage girls on full moons. The monster's added note transforms it further into a direct communication from Vi to Lizzy—a confession, an explanation, and an invitation.

3. What does the book reveal about the relationship between Vi and Iris?

The book is the object that first brings Iris into the children's world. Vi adds Iris's name to the cover, giving her a place in the project. In 2019, the monster's message in the book—claiming she saves girls because she couldn't save Iris—shows that the bond formed around the book never dissolved. The book becomes the medium through which Vi reaches out to Lizzy across four decades, asking her to come home.

4. How does the book connect to the novel's treatment of identity?

The book is a constructed object—a binder relabeled, pages added, names written and rewritten. It mirrors the way Gran constructs and erases identities in the novel. Vi's identity as Patient S is fabricated by Gran, just as the book's ACCOUNTING, 1973 label is covered over. The book's evolution—from childhood catalog to adult confession—parallels Vi's own evolution from a child who hunted monsters to a woman who has become one, and who has redefined what that means.