Chapter 39 Summary, Analysis, and Key Themes

⚠️ Spoiler Warning: This guide contains detailed spoilers for the entire novel. Proceed only if you've finished reading or are comfortable knowing the plot.

Summary

The chapter opens with Detective Cates summoning Isadora Morales for her interview. As a storm rages outside, Isadora sits down in the library, and Cates asks about the newspaper staff's meeting schedule. She explains that the staff met during fourth period and that editors held Monday evening meetings, which she attended after staying at school to prepare. Cates then asks whether she has ever filed a police report, and Isadora denies it—a lie that carries weight given what she reveals later.

During the interview, Isadora shares a personal detail: her sister Caye is afraid of lightning, and Isadora sings her a song about the moon searching for her lost sister to calm her. Pilar de León, present for the interview, is visibly moved and wipes tears from her eyes, remarking on the gift of siblings. Cates seems taken aback by this emotional display and quickly moves on.

After dismissing Isadora, Cates requests Marlowe West. In the hallway, Marlowe stops Isadora and apologizes for judging her the previous night. He admits he doesn't believe she killed Blaine, even though he finds her perfectly capable of murder—driven, ambitious, and protective of those she loves. He explains that he doesn't think she would risk leaving her sister behind. Marlowe offers to help her if her secret is exposed, insisting that the money means nothing to him and that she will still go to Brown.

Isadora then reveals that she called the police hotline the previous night, admitting that she can't trade her future for anyone else's. The two share a passionate kiss, and Isadora suggests going to her room. Detective Cates interrupts, summoning Marlowe to the library. Before entering, Marlowe whispers that they'll continue later and follows Cates.

Isadora, dazed and conflicted about feeling happy amid the investigation, slips into the hidden passageway to eavesdrop on Marlowe's interview. Through the wall, she hears Cates reveal that the diamond was found in Blaine's room. Marlowe says that makes sense—he may have lost it there—and asks for its return. Cates tells him the diamond has been cataloged as evidence, and Marlowe's footsteps move away. Isadora's legs tremble as she worries about what this means.

Lunch is announced, and Cates and Pilar de León agree to meet after lunch to discuss the evening's plans. Once the room is quiet, Isadora exits the passage—only to find Pilar de León sitting in a chair, smiling at her.

Key Events

Detective Cates interviews Isadora about newspaper meeting schedules and police reports; she denies ever filing one.
Isadora shares the story of singing to her sister Caye during storms, which moves Pilar de León to tears.
Marlowe apologizes to Isadora, declares he doesn't believe she killed Blaine, and offers to help her if her secret is exposed.
Isadora confesses she called the police hotline the previous night.
Marlowe and Isadora kiss; Detective Cates interrupts and escorts Marlowe to the library.
Isadora eavesdrops from the hidden passage and learns the diamond was found in Blaine's room.
Marlowe asks for the diamond back; Cates says it's evidence.
Isadora exits the passage and is caught by Pilar de León.

Character Development

Isadora reaches a turning point in this chapter. Her confession that she called the police hotline marks a decisive shift from protecting her secret at all costs to accepting the consequences of her actions. Her guilt about feeling happy—even briefly—shows how the investigation has weighed on her. The detail about singing to Caye during storms reveals a protective, nurturing side that contrasts with the calculated ambition she often projects.

Marlowe sheds some of his stoic reserve here. His apology is sincere, and his admission that he finds Isadora capable of murder is refreshingly honest—he doesn't romanticize her, but he trusts her. His offer to help her regardless of the cost shows a willingness to sacrifice his own comfort for someone he cares about, and his insistence that she will still go to Brown reveals his belief in her future.

Pilar de León shows unexpected emotional depth when she tears up at Isadora's story about her sister. This moment humanizes a character who has been largely opaque, hinting at her own relationship with family. Her presence at the end, smiling as Isadora emerges from the passage, suggests she knows more than she lets on.

Themes, Symbols, or Motifs

Sibling bonds and protection are central to this chapter. Isadora's song for Caye—about the moon searching for her lost sister—mirrors Isadora's own protective instincts. Marlowe explicitly connects Isadora's love for her sister to his belief in her innocence, and Pilar de León's emotional reaction underscores how universally resonant this bond is.

Secrets and their consequences drive the plot forward. Isadora's lie about the police report contrasts with her confession to Marlowe, and the hidden passageway becomes a literal symbol of the secrets she's keeping. Her eavesdropping places her in a position of knowledge that may now be compromised.

Class and wealth disparity surface in Marlowe's observation that the money means nothing to him—a stark reminder of how differently the characters experience the stakes of this investigation. For Isadora, the secret could cost her future; for Marlowe, it's an inconvenience.

Trust and suspicion are in tension throughout. Marlowe trusts Isadora despite finding her capable of murder, while Isadora's decision to eavesdrop shows she doesn't fully trust the investigation to protect her. The chapter ends with trust being tested again as Pilar de León catches her.

Why This Chapter Matters

This chapter is a hinge point in the novel. Isadora's decision to call the police hotline represents a moral commitment to truth over self-preservation, even as it puts her future at risk. The revelation that the diamond was found in Blaine's room—and that Marlowe may have lost it there—complicates the investigation and raises new questions about how the evidence connects to the murder. The chapter also deepens the romance between Isadora and Marlowe, giving their relationship emotional weight that will likely matter in the chapters to come. Finally, Pilar de León's discovery of Isadora in the passage sets up a confrontation that could change the course of the investigation.

Study Questions and Answers

1. Why does Isadora decide to call the police hotline, and what does this reveal about her character?

Isadora calls the hotline because she realizes she can't trade her future for anyone else's. This decision shows she's willing to accept the consequences of her actions rather than let her secret die with Blaine. It reveals a shift from self-preservation toward accountability, even though it puts her at risk.

2. What does Marlowe's offer to help Isadora reveal about his character and his view of their relationship?

Marlowe's offer shows he's willing to sacrifice his own comfort—and potentially his reputation—to protect Isadora. His admission that he finds her capable of murder but doesn't believe she did it reveals a nuanced trust: he sees her clearly, including her flaws, and chooses to believe in her anyway. His insistence that she'll still go to Brown shows he's invested in her future, not just their present.

3. What is the significance of the diamond being found in Blaine's room?

The discovery of the diamond in Blaine's room connects Marlowe to the crime scene, even though he claims he may have simply lost it there. This raises questions about how the diamond ended up with Blaine and whether it's linked to the murder. Cates's refusal to return it—calling it evidence—suggests the diamond is central to the investigation and may be a key piece of evidence in determining what happened.