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48 pages 1 hour read

V. E. Schwab

Tunnel of Bones

V. E. SchwabFiction | Novel | Middle Grade | Published in 2019

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Part 4Chapter Summaries & Analyses

Part 4: “Mayhem”

Part 4, Chapter 17 Summary

Content Warning: This section of the guide includes discussion of death and child death.



Through her camera lens, Cassidy can see Thomas’s red glow on the dark train. She enters the Veil, despite Jacob’s warnings. The ghost of that Veil threatens her, but Jacob pulls her to safety outside the stopped train. They hear Thomas counting in French. He appears when Cassidy says “please” in French, but only briefly. Suddenly, the train begins moving again. Cassidy and Jacob exit the Veil, and Cassidy stumbles while trying to get back on the Metro, but Jacob grasps her hand and helps her up.

When they find Pauline, her discernible fear convinces Cassidy that the woman does believe in ghosts. Pauline admits that she’s less skeptical than she let on because she’s seen things she can’t explain. At the train station, evidence of malfunctions on other trains shows that Thomas is getting stronger and more dangerous. Cassidy tells Pauline the truth about her gift, Jacob, and their current mission, but Pauline isn’t convinced. At Sylvaine’s apartment, they meet her daughter, Adele, who appears to be just a bit younger than Cassidy. However, Sylvaine is upset by the subject of Thomas’s death, refuses to talk about it, and sends them away.

Part 4, Chapter 18 Summary

Pauline takes Cassidy to the Pont Marie, where they meet up with the Blakes. Mrs. Blake tells a ghost story about the wife of a World War II resistance fighter who spied on the Nazis by dating one and bringing his secrets back to her husband. They always met in secret at midnight on the Pont Marie, a bridge that crosses the Seine. One night, the woman’s husband never showed up, and she froze to death while waiting there for him.

While listening to the story, Cassidy realizes that Adele has followed her there. She tells Adele the real reason why she wants to know about Thomas. Adele believes her and gives her old photographs of Thomas and members of his family. Adele then introduces herself to Mr. and Mrs. Blake and invites herself to tag along to their next location, Notre Dame Cathedral. She tells Cassidy that she should help because she speaks French, she can fit into small places, and Thomas is her relative.

Part 4, Chapter 19 Summary

As they walk to Notre Dame, Cassidy steps out onto a crosswalk, and a car nearly runs her over. Her father pulls her back just in time. They realize that every stoplight is green, causing chaos in the street. High up in a cathedral tower, Mrs. Blake tells the story of a young woman who was pushed to her death from the tower by an old woman who was never seen again. 

Cassidy enters the Veil, where there’s no fence around the ledge, hoping that the opportunity to push her will draw Thomas out. Jacob becomes furious at how much risk she’s taking. He feels that she’s trying to stop him and Thomas because she thinks he’s “turning into some kind of monster” (138). When Cassidy questions if he remembers his death, he insists that he does but refuses to describe it because it will change the way she thinks of him. While still in the Veil, the ghost of an old woman appears and urges Cassidy and Jacob toward the ledge. Cassidy uses her mirror pendant to send the ghost on. When they exit the Veil, Adele witnesses them appearing out of thin air.

Part 4, Chapter 20 Summary

That evening, Cassidy and Adele go up to the hotel room while Cassidy’s parents have a drink in the hotel dining room. The Blakes are scheduled to leave Paris the next day, leaving Cassidy little time to finish her mission. Lara calls when she sees the mayhem occurring across Paris on the news. She’s furious to learn that Cassidy told Adele about ghost hunting. That’s soon forgotten, however, when they realize that Adele knows the story of how Thomas died.

Part 4, Chapter 21 Summary

Adele reveals that Thomas, Richard, and two other boys snuck into the Catacombs, where they played hide-and-seek. Thomas was the seeker for the first two games, but in the third game, he hid in a small alcove where an old section of bones fell and trapped him. Richard searched all night but couldn’t find him. A police search party found Thomas’s body. Richard never forgave himself for losing his brother. After hearing the story, Cassidy realizes that the Catacombs will be the best place to remind Thomas of what happened to him. She tells Jacob and Adele that she has an idea about how they can get back into the Catacombs, but she says it’s a “really, really bad” one (149).

Part 4, Chapter 22 Summary

Cassidy plans to destroy her parents’ footage from the Catacombs so that they’ll have to go back to film again. She makes it appear as if the cat thought the film reel was a toy ribbon and shredded it. Jacob, using his growing ability to interact with the physical world, knocks the film container onto the floor while Cassidy is with her parents. It creates a loud thump, giving her an alibi. After discovering the destroyed film, Mrs. Blake calls Pauline, who arranges to get them back into the Catacombs after hours.

Part 4, Chapter 23 Summary

When they arrive at the Catacombs, Adele is too scared to go in, so she says that she should be getting home. Cassidy thanks her for her help and gives her a salt and sage pouch to help keep her safe. Then, Cassidy and Jacob follow Mr. and Mrs. Blake through the Catacombs’ galleries and into the tunnels.

Part 4 Analysis

Cassidy’s interactions with Pauline in Chapter 17 develop a tension between belief and skepticism. Pauline admits that although she doesn’t want to believe in ghosts, she has seen things she can’t explain, which makes it difficult not to believe. However, she adds a caveat: “Belief is not a blanket, Cassidy. It doesn’t cover everything” (123). Her justification for dismissing the truth of Cassidy’s claims reflects her resistance to things she can’t see or understand. In this, Pauline represents adults, whom the trilogy depicts as less open to the supernatural than children, who revel in exploring things that are magical and fantastic. Through Pauline and Cassidy’s interactions, the author shows that belief is about being open to new ideas and truths about the world, a childlike quality that the novel’s tone portrays as something to be cherished.

Part 4’s introduction of Sylvaine and Adele Laurent continues to thematically develop History’s Enduring Presence in Places and People from a new angle. Since Cassidy is one of the very few people who can cross into the Veil, the presence of restless spirits has a limited impact. The story of Sylvaine and Adele’s ancestors, however, still resonates with them and influences their sense of family identity. Sylvaine tells Cassidy, “History is history. It is past. And private” (126). Her demeanor, however, clearly shows that this particular history still carries emotional weight. The implication is that when a death is tragic and a spirit needs closure before being able to move on, the deceased’s living relatives need closure too. Historical events can cause wounds in future generations. By bringing closure to spirits, Cassidy helps heal those wounds.

Mrs. Blake’s ghost stories also develop the theme of history’s enduring presence in places and people. These stories help people make sense of otherwise enigmatic phenomena and believe that death may not be the end. If history endures through the ghosts that remain on earth, haunting the living, then life doesn’t seem so fleeting, and an afterlife seems promising. Adele’s delight at the Notre Dame ghost story shows how these tales make the idea of death more palatable because they seem “held back from reality, the way [they] are held back from the balcony’s edge” (136). Like the protective barrier around the tower’s balcony protects people from falling, and like ghost stories distance listeners from the horrors they convey, the Veil separates people from dangerous ghosts, albeit imperfectly. This separation no longer protects Cassidy. The Veil even pulls her in against her will at times. She must balance what she accomplishes there with the dangers she faces as she explores the challenges of Fulfilling One’s True Purpose While Navigating Difficult Choices. Such difficult choices include lying to her parents and destroying their film reels to fulfill her mission.

Part 4 continues to advance Jacob’s character arc and the conflict he poses for Cassidy. He can grasp her hand and help her onto the train, a sign of a continuing transformation that neither he nor Cassidy understands. Before now, it was too sensitive of a subject for them to discuss openly. When Jacob finally admits that something is happening to him and that he doesn’t know what it means, his acknowledgment of the conflict paves the way for them to eventually address it together. His statement that he doesn’t “want to go” and his dedication to protecting Cassidy help elucidate Cassidy’s ambivalence about her friend’s future (138). This tension continues to thematically develop Overcoming Fear and Embodying Bravery to Address Challenges, something with which both Jacob and Cassidy must increasingly contend as the narrative progresses.

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