46 pages 1-hour read

The Shape of Thunder

Fiction | Novel | Middle Grade | Published in 2021

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Chapters 17-24Chapter Summaries & Analyses

Chapter 17 Summary: “Cora”

Quinn and Cora meet regularly in the woods to try to find a wormhole. Quinn explains that Parker changed in the months before his death; he became reclusive, always on his computer, and became impatient and mean to Quinn. Quinn explains that he would say awful things at dinner and she is reluctant to repeat them. Cora asks whether he went after Mabel because she was Muslim. Quinn is shocked and scrambles to answer. She says she felt like she didn’t know Parker well toward the end of his life. Cora angrily tells her that she should have stopped him. Quinn starts crying and apologizing, agreeing with Cora that she should have stopped him. Quinn convinces Cora to stop researching and just try to time travel.

Chapter 18 Summary: “Quinn”

Quinn and Cora go to the tree in the woods after school. They decide to trust Quinn’s instincts about the tree’s knot that looks like an eye. Cora’s research suggested that “exotic matter” associated with wormholes can sometimes be found through intuition. They climb the tree and Quinn is assaulted with memories about climbing it with Parker. A sliver of sunlight shines on the tree’s knot, and the girls are excited that it might be the wormhole. They sit back to back in the tree and visualize the science classroom where the atrocity happened. Quinn thinks of the pictures she saw of the science room on the news, but her mind wanders to herself following Parker into their parents’ bedroom that morning. She watched him opening the safe where their father’s guns were kept. Quinn feels immense guilt for not intervening. She realizes that she is picturing the wrong moment, and wonders whether that is why they cannot enter the wormhole, but she is too ashamed to tell Cora about the memory.

Chapter 19 Summary: “Cora”

Cora competes in a Quiz Bowl competition against another school. She is foggy and distracted, having stayed up late researching wormholes the night before. The coach subs her out for another student due to her delayed responses.


Mia confronts Cora after the match, accusing her of blowing the match and only being interested in spending time with Quinn. Mia asks her if she talks to Quinn about Owen because she feels weird about talking to Mia about him. Cora tells Mia that what she’s doing with Quinn isn’t her business, and Mia says that she’s Cora’s best friend. Cora recognizes that she shouldn’t argue, but she tells Mia that she never said Mia is her best friend. Mia responds that she’s tired of Cora’s expectations that everyone pity her and that she treats others like they don’t matter. They’re cut off from fighting further when Mia’s mom comes to check on them.


On the way home, Grams asks Cora about the argument, which she saw happening. Cora is evasive, but finally tearfully admits that she misses Mabel and feels guilty for spending time with Quinn. She wonders aloud if being friends with Quinn makes her a bad sister. Grams assures her that this isn’t true.

Chapter 20 Summary: “Quinn”

Cora is busy, so Quinn goes to the tree alone. Cora wonders whether her seeing Parker getting the gun that morning is the key to accessing the wormhole. She knows she should tell Quinn, but she is too ashamed to.

Chapter 21 Summary: “Cora”

Cora asks Dr. Randall whether he believes that time travel is possible. He doesn’t answer her specifically, but instead asks whether she regrets her final moments with her sister. She admits that they argued that morning: Cora told Mabel that Mabel’s lip gloss looked ugly. Cora was also annoyed that morning because Mabel hadn’t made her bed. Cora smiles, realizing that she’ll be able to say all the things she wants to say to Mabel when she manages to time travel. Dr. Randall misinterprets her smiling as Cora forgiving herself.

Chapter 22 Summary: “Quinn”

Quinn reflects on how lonely Parker seemed in the final months of his life. When Quinn arrives home, her mom has made pies and talks about opening a pie shop.


Quinn and her mother argue when Quinn says that they need to talk about how her father wants to move, about Parker and the horrific crimes he committed, and about her father’s guns. Quinn’s mother says that she “can’t handle this right now” and shuts herself in her bedroom (229).

Chapter 23 Summary: “Cora”

Cora’s dad takes her to a Middle Eastern restaurant for dinner after therapy. Cora tells her father that she wants to learn more about being Arab. He assures her that they can talk more about it. He tells her that he is pleased that she is spending time with Quinn again, and that he doesn’t blame Quinn for what happened. Cora doesn’t want to tell her father about their time traveling plan; she simply says that they’re not really friends again, and that it’s hard to explain. Her dad asks if their relationship is complicated, and Cora asks her dad how to say the word in Arabic.

Chapter 24 Summary: “Quinn”

In a letter to Parker, Quinn tells him that every time she thinks of him, she wants to cry, but that she doesn’t think that she deserves the relief of crying. She looks at a smiling photo of herself and doesn’t think she’ll be able to smile like that again.


Quinn’s dad asks whether hanging out with Cora is a good idea. She tries to talk to him about Parker but freezes up. Her dad tells her that he appreciates that it’s hard to talk about and turns back to the television.

Chapters 17-24 Analysis

Violence Motivated by Racism continues to feature as a prevalent theme as Cora points out to Quinn that “the news said that Parker was active on all these forums full of people who hated women and immigrants and Muslims” (158-59). This causes Cora to wonder aloud to Quinn “whether [Parker] picked Mabel on purpose or if […] it was at random” (159). Parker’s interest in the forums suggests that his murder of Mabel was racially motivated by the Hamed family’s ethnicity, Lebanese, and their religion, Islam. Furthermore, Quinn tells Cora that Parker “would say awful things at dinner sometimes,” but she is ashamed of Parker’s comments and will not elaborate (156). It is implied that Parker touted sexist and racist ideology. Parker’s interaction with these online forums had an immensely damaging impact that devastated his community, including the tragedy of his taking his own life. Warga’s characterization of Parker highlights the dangers of unsupervised internet browsing for disenfranchised and isolated individuals, particularly children, who are looking for identity and belief systems online. Rather than blaming Parker as an individual, Warga draws attention to more systemic problems, such as online radicalization and gun access, as the causes of school shootings.


Warga continues to parallel racism with hate crimes. She demonstrates that racism and hatred in general can start small and grow into dangerous and devastating forces. Warga critiques racism in society and the media through Cora’s discerning comments. Cora criticizes the coverage of shootings committed by children in the media, as she comments, “when white boys like Parker commit a violent crime, everyone tries to figure out why they did it. But when a Black or brown kid does something like that, no one asks more questions” (158). Cora outlines the media’s racist representation of children of color as inherently criminal, as opposed to white perpetrators for whom an agenda or motivation must be discovered.


Furthermore, Cora continues to struggle with her identity as an Arab American. She feels that she is “not Arab enough,” but at the same time, “too Arab” (158) and that she is unreasonably expected to have knowledge of the Arabic language and the Middle East, but also that she should adhere to the trope of the white-washed American teenager. She feels caught between these cultural currents and struggles to fully identify with either. This feeling of exclusion further exacerbates Cora’s grief for her sister, Mabel, who was “the only other person who got it” (158).


Grief and Guilt After the Loss of A Sibling is explored through the journeys of Cora and Quinn as they continue to struggle with navigating immense grief. Cora feels isolated by the intensity of her grief for Mabel. Quinn does not feel that she deserves the relief of crying, because she did not manage to stop Parker committing his crimes. In a letter to Parker, she tells him, “every time I think about you and what you did, I want to cry, but I try not to let myself. The pain goes away a little when I cry. And I know I deserve to feel the hurt” (225). She remembers seeing him opening their father’s safe, and, overwhelmed and confused, she did not intervene. Quinn’s guilt for Parker’s actions keeps her stuck in her grief.


Cora also struggles with guilt alongside her grief. She avoids Quinn’s companionship, even though they are experiencing similar losses, because it feels like a betrayal of Mabel. Cora worries that “[She] might be a bad sister because [She’s] talking to Quinn again” (190). The time travel plan allows her the solace of spending time with her best friend as she thinks, “another awesome thing about this plan is that if it works, Quinn can be my best friend again” (161).


Healing Through Human Connection and Hope is presented again by Warga as an important and recurring theme. Quinn and Cora needed this joint mission, not to turn back time, but to rediscover their friendship and support each other through grief. Their resumed friendship allows healing to take place in both. This is especially essential for Quinn, whose family is incapable of talking about Parker’s crime and death. Her mother shuts down and tells Quinn that she “can’t handle this right now” when Quinn begs her to talk about Parker’s murders and suicide (210). Quinn’s father turns to the television rather than talking to her more about her feelings of distress, confusion, and isolation. This leaves Quinn feeling frustrated, illustrating the extent of her loneliness in the confusing aftermath of her brother’s death.


Cora’s residual trauma in the aftermath of her sister’s murder is further characterized in her feelings of panic at the Quiz Bowl away game, as she thinks, “I’m not familiar with the schools, so I don’t know where all the exits are or how to get out quickly if I need to” (182). Cora’s trauma results in her distraction at the Quiz Bowl and a loss of innocence as she must mentally plan her escape in case of a shooting. Through Cora’s point of view, Warga prompts readers to consider the legitimate impacts for children who have been affected by gun violence.

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