Chapter 39 Summary, Analysis, and Key Takeaways

⚠️ 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 in October 2017 with Shea on her lunch break at the doctor's office where she works, listening to a podcast that poses the novel's central question: whether killers are born or made, and whether a potential murderer can be saved before they ever kill. Karen, her coworker, interrupts to tell her lunch is over.

Shea struggles to focus, aware she's been distracted by the investigation. As she returns to the front desk, she has a moment of clarity: Esther was right that this job is like spending her life in a waiting room. When Karen leaves for her own lunch, a cart of patient files is jostled and files spill to the floor. Shea picks them up and finds Beth Greer's medical file in her hands. Hidden from view of the waiting room and security cameras, she opens it and reads the diagnosis: Beth has an inoperable brain aneurysm. If it bursts, she will die.

Shea tells Karen she feels ill and leaves work early. On the sidewalk, she checks her email and finds an unread Google alert from the Claire Lake Weekly Press. The article reports that human remains were found near the east shore of Claire Lake by two children in early September. The remains are those of a Caucasian woman in her mid-20s who died 25 to 45 years ago. Officer Martin Furlong is quoted saying the body may be a lost hiker or someone left there, and coroner Tamara Li confirms DNA testing is underway.

Shea immediately concludes the remains are Lily's. She realizes this discovery is the reason Beth agreed to the interview now—Beth knows the DNA will eventually connect the body to her. Shea sends the article to Michael and then calls her sister Esther to reconcile, pouring out the truth about the investigation, Michael, the kiss, and the cat she adopted (Winston Purrchill). Esther is alarmed and urges her to walk away, offering to rescue her, but Shea insists she has to see it through.

Michael calls back, excited about the Lily connection. Shea tells him she's heading to the Greer mansion—not to talk to Beth, who is in Portland for a medical test, but to break in. She reveals Beth's aneurysm to Michael, explaining it's part of why Beth chose to talk now, though not why she chose Shea. She hangs up, turns off her phone, and watches Claire Lake recede as the bus climbs toward Arlen Heights.

Key Events

Shea reads Beth's medical file and learns about the inoperable brain aneurysm
Shea discovers an unread news alert about unidentified remains found near Claire Lake
The remains are identified as a woman in her mid-20s who died 25–45 years ago; DNA testing is underway
Shea concludes the body is Lily and that this is why Beth agreed to the interview
Shea reconciles with Esther over the phone, sharing details of the investigation
Shea tells Michael about the aneurysm and her plan to break into the Greer mansion while Beth is away

Character Development

Shea reaches a turning point in this chapter. Her decision to call Esther and confess everything marks a shift from isolation to connection—she acknowledges she's been distant and asks to be part of Esther's life, including the potential baby. At the same time, her obsession deepens: she's willing to risk her job (by reading the file and revealing the aneurysm), her safety (by breaking into the mansion), and her relationship with Esther (by refusing to walk away). The chapter shows her choosing the investigation over everything else, even as she reaches out to repair her personal life.

Beth is revealed to be more vulnerable than she appears. The aneurysm explains her urgency to tell her story now—she may not have much time. It also reframes her decision to choose Shea as an interviewer, though Shea notes this isn't the whole reason.

Esther shows her protective side, immediately sensing something is wrong and offering to rescue Shea. Her concern underscores the danger of Shea's choices.

Themes, Symbols, or Motifs

Nature vs. nurture: The podcast Shea listens to poses the novel's central question about whether killers are born or made. This frames the chapter's revelations about Beth and Lily.

The waiting room as life metaphor: Shea realizes Esther was right—her job literally places her in a waiting room, a symbol of a life on hold. This contrasts with the urgency of Beth's aneurysm and the ticking clock of the investigation.

Mortality and urgency: Beth's inoperable aneurysm gives her a deadline. The discovery of Lily's remains adds another layer of urgency—the past is literally surfacing.

Medical privacy and confidentiality: Shea violates Beth's privacy by reading her file, and later reveals the diagnosis to Michael. This breach is a moral line she crosses in pursuit of the truth.

Coincidence and fate: The Google alert sat unread in Shea's inbox for days, yet she finds it at exactly the right moment. The remains were found in early September, around the time Beth agreed to the interview.

Why This Chapter Matters

This chapter is the pivot point of the novel. The discovery of Lily's remains transforms the cold case into an active investigation—DNA testing could connect Beth to the body at any time. Beth's aneurysm explains her sudden willingness to talk, adding a tragic dimension to her character. Shea's decision to break into the mansion escalates the stakes from investigation to trespassing, and her reconciliation with Esther shows she's aware of what she's risking. The chapter sets up the climax: Shea is about to enter the Greer mansion alone, with Beth away, and the answers she finds there could change everything.

Study Questions

1. Why does Shea conclude that the discovery of the remains is the reason Beth agreed to the interview?

Shea reasons that the remains—which she believes are Lily's—were found in early September, around the time Beth agreed to talk. Since DNA testing could eventually connect the body to Beth, Beth would want to control the narrative by telling her story first. The aneurysm adds urgency: Beth may not have much time left.

2. What does Shea's decision to call Esther reveal about her character at this point in the novel?

It shows Shea is aware of how isolated she's become and wants to repair her relationship with her sister. She shares details she's kept secret—the investigation, Michael, the kiss, the cat—and asks to be part of Esther's future. However, she also refuses Esther's plea to walk away, showing that her commitment to the truth outweighs her desire for safety.

3. Why does Shea tell Michael about Beth's aneurysm, and what does this reveal about her priorities?

Shea tells Michael about the aneurysm to explain why Beth chose to talk now—it's a medical deadline. She acknowledges she could lose her job for revealing confidential information, but says she doesn't care anymore. This shows that the pursuit of the truth has become more important to her than her career or professional ethics.