Winterhouse

Eleven-year-old Elizabeth Somers lives with her distant relatives, Uncle Burlap and Aunt Purdy, in the poor town of Drere. Her parents were reportedly killed in a fireworks accident when she was four. Her only keepsake from her mother is an indigo marble pendant inscribed with the word "Faith" and the outline of a skeleton key. One winter afternoon, Elizabeth comes home to find a note taped to the locked front door: Her aunt and uncle have left on their own vacation and are sending her to a place called the Winterhouse Hotel, providing only a train ticket, a bus ticket, a bag of clothes, and three dollars.

As Elizabeth leaves the yard, a mysterious sensation overtakes her, a gut-level certainty that something is about to happen, and the gate slams shut behind her on its own. She calls this recurring experience "the feeling." It has been intensifying since the previous summer, always accompanied by small unexplained disturbances: objects sliding across tables, books falling from shelves.

On the long journey north, Elizabeth, a voracious reader who loves anagrams and word puzzles, notices a man in a black suit staring at her from the rear of the bus. His wife, a woman dressed entirely in black with piercing eyes, locks Elizabeth in an unsettling gaze. Elizabeth falls asleep and has a nightmare in which a menacing older woman confronts her in a dark library, a dream that recurs throughout her stay. When the bus arrives at Winterhouse, the hotel is an enormous, gleaming fortress overlooking frozen Lake Luna. The woman in black whispers to her husband that "it begins" and startles Elizabeth by addressing her by full name.

Inside the grand lobby, a friendly bellhop named Jackson confirms Elizabeth's reservation is paid in full through January 5th. Norbridge Falls, the hotel's elderly proprietor, introduces himself with warmth and charm, performing a magic trick by producing a gold coin from behind Elizabeth's ear. As he walks Elizabeth to her room, he introduces her to Flurschen, Winterhouse's famous candy, and Elizabeth is overcome by a powerful sense of having tasted it before. Near the library, Norbridge seems momentarily worried. He tells Elizabeth to consider Winterhouse her home.

Unable to sleep, Elizabeth sneaks to the library past midnight and peers through the glass doors. Inside, Norbridge searches through books with a flashlight, methodically pulling volumes off shelves and replacing them. On her way back, she overhears the bellhop Sampson arguing with the man and woman in black, who are demanding entry to the locked library.

At breakfast the next morning, Elizabeth meets Freddy Knox, a boy her age whose wealthy parents send him to Winterhouse each Christmas while they vacation abroad. They bond instantly over a shared love of wordplay. Elizabeth visits the three-story library and meets Leona Springer, the elderly librarian who first came to Winterhouse from Uganda in 1951 at age eleven and never left. Norbridge asks Elizabeth to check in with him or Jackson twice daily, explaining he wants to ensure her safety.

That afternoon, while exploring the library's third-floor reference room, the feeling strikes powerfully and the door bangs open. On a high shelf Elizabeth discovers a hidden volume called A Guide for Children by Riley Sweth Granger, published in 1897. Despite a sign forbidding removal of reference books, she slips it into her backpack. Later, the man in black intercepts her in the hallway. He introduces himself as Marcus Q. Hiems, a rare bookseller, and claims Norbridge has a "shady past" as a book thief.

Freddy takes Elizabeth to the portrait gallery, where paintings of the Falls lineage hang. She studies a childhood portrait of Norbridge's twin sister, Gracella Falls, whose eyes convey wariness and distance. Freddy explains that Gracella became interested in dark magic and ran away at eighteen; legend holds that saying her name three times at midnight in the library will bring her back. In the portrait of the family's founder, Nestor Falls, Elizabeth and Freddy notice twelve lines of scrambled letters painted on the book in Nestor's lap. Jackson tells them no one has ever decoded the message.

One night, Elizabeth convinces Freddy to investigate the library. Outside the doors, Selena Hiems, Marcus's wife, confronts them, warning them to be careful around Norbridge and reaching for Elizabeth's pendant before Norbridge and Leona open the doors from inside. Norbridge takes the children to his apartment and explains the legend of The Book: His grandfather Nestor's friend created a puzzle centered on a magical book hidden in the library. If a good person solves the puzzle, Winterhouse will remain a place of joy indefinitely, but if the wrong person gains The Book, that person could destroy Winterhouse. He asks the children to stay away from the Hiemses.

In A Guide for Children, Elizabeth discovers a chapter on the Vigenère Cipher, a method for encoding messages using a keyword and an alphabet grid. She realizes this cipher could decode Nestor's message, but without the correct keyword, it remains unbreakable. She also notices a single ornate silver letter "T" on the book's front page. New letters appear daily, though Freddy cannot see them. Elizabeth discovers that Marcus Q. Hiems's signature, viewed upside down, reads "Sweth," the middle name of Riley Sweth Granger, and grows certain A Guide for Children is The Book. Meanwhile, she practices summoning the feeling deliberately and, after several failed attempts, manages to make the book quiver on her desk.

On Christmas Eve, Elizabeth drags Freddy to the library at midnight and impulsively shouts Gracella's name three times. Thumping sounds come from the third floor, a crimson light streaks across the ceiling and out a window, and booms echo from above. They flee in terror. Freddy is furious, and he avoids Elizabeth on Christmas Day. She later accepts a tea invitation from the Hiemses, who drop their friendliness and press her to reveal whether she has found a special book. After reconciling with Freddy, Elizabeth spots Gracella's old cabin during a cross-country ski trip and impulsively calls Gracella's name again. A ball of crimson light pursues them back to Winterhouse but stops at the bridge over the creek, unable to cross what appears to be a protective boundary.

Elizabeth discovers A Guide for Children has been stolen from her drawer, almost certainly by the Hiemses. Using a master key from Freddy's workshop, she sneaks into their room and finds a coffin-like crate. A letter reveals that Selena is Gracella's daughter and the crate contains Gracella's body, suspended near death; Selena must reunite Gracella's spirit with her body using a Falls family member's unwitting help.

On New Year's Eve, Elizabeth tells Norbridge everything and waits in his apartment. While alone, the feeling stirs, her pendant grows warm, and the keyword comes to her: "Faith." The silver letters had been spelling "THE KEY IS AROUND YOUR NECK." Using the cipher, she decodes Nestor's message, a rhyme instructing the holder of The Book to declare "I choose the bad" or "I choose the good." She then discovers a family portrait in Norbridge's bedroom showing Norbridge, his wife Maria, and their daughter Winifred, who wears the very same indigo pendant. Her mother was Winifred Falls. Norbridge is her grandfather.

Elizabeth and Freddy find the library bathed in crimson light. On the third floor, Gracella sits fully materialized, tall, white-haired, and radiating malevolent power, with Norbridge unconscious on the ground. Gracella reveals that Selena tracked Elizabeth's emerging powers, paid Aunt Purdy and Uncle Burlap to send her to Winterhouse, and orchestrated everything so Elizabeth's presence would revive Gracella's spirit and help locate The Book. Elizabeth sends Freddy for help and faces Gracella alone. Gracella tempts her to join forces; for one disturbing moment, the offer appeals to something dark Elizabeth senses at the edges of her own power. When Norbridge stirs and breaks Gracella's concentration, Elizabeth summons the feeling, telekinetically pulls The Book into her hands, and shouts, "I CHOOSE THE GOOD!"

The crimson light extinguishes. Gracella collapses and dies. Elizabeth shows Norbridge her pendant and tells him Winifred was her mother; Norbridge, stunned, confirms the necklace was his gift to Winnie. The Hiemses have vanished without a trace, and Elizabeth returns The Book to its hiding place. Norbridge explains that he told Winifred about The Book when she was young, and the legend frightened her so deeply she left Winterhouse, changed her name, and severed contact to protect herself and any future children. He never knew Elizabeth existed. He acknowledges Elizabeth's genuine magical ability and warns her to use it for good and never feel superior because of it.

During her final days, Norbridge promises to bring Elizabeth back permanently. On her last night, she enters Gracella's locked room and discovers a book by Damien Crowley hidden in a drawer; a faint crimson flash rims the far wall as she slams the door shut. The next morning, Norbridge gives her a parting gift: another novel by Crowley, hinting there is more to discover. Elizabeth boards the bus home clutching her pendant, certain she will return.