Chapter summaries This is Why We Lied Karin Slaughter

This is Why We Lied Chapter 11: Faith’s Investigation Begins

⚠️ 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

Faith Mitchell arrives at the Dillon County Sheriff’s Office at dawn, summoned by a satellite SOS from Will Trent. The station is empty except for her growing impatience. Amanda Wagner soon joins her, and they head to Ridgeville Medical where Dave McAlpine is being treated. Will and Sara Linton are already there; Will’s hand was cut by Dave’s butterfly knife. Amanda strong-arms Sheriff Hartshorne into letting the GBI take over the investigation. Faith interviews Dave alone in his hospital room. Dave initially claims he strangled Mercy but then breaks down upon learning she is dead. Faith discovers Mercy’s voicemail on Dave’s phone: Mercy calls for help, sounds terrified, and then says “Don’t! Dave will be here soon” before the message cuts off. The call was made minutes before Mercy’s estimated time of death. Faith concludes Dave could not have killed her.

Key Events

  • Faith receives an emergency SOS from Will in the middle of the night and drives to the mountains.
  • She waits alone at the Dillon County Sheriff’s Office for over twenty minutes.
  • Amanda tracks Faith’s phone and meets her at the hospital, taking charge of the case.
  • Will briefs Faith: he arrested Dave for assault and resisting, but Dave doesn’t yet know Mercy is dead.
  • Sara shares medical details: Dave’s injuries from the altercation, and the discovery of Mercy’s notebook and backpack.
  • Faith interviews Dave in his hospital room; Sheriff Hartshorne is forced to leave.
  • Dave initially claims he strangled Mercy but later breaks down crying when told she is dead.
  • Faith finds Mercy’s voicemail on Dave’s phone: Mercy calls Dave for help and says “Dave will be here soon” before the message ends.
  • Faith realizes Dave did not kill Mercy; the investigation must widen to everyone else on the mountain.

Character Development

  • Faith Mitchell: Exhausted and distracted by worries about her children and the man she’s sleeping with, Faith nonetheless shifts into professional mode. She shows patience and cunning during the interview, resisting Dave’s manipulation and noticing the crucial evidence on his phone.
  • Amanda Wagner: Demonstrates her authority and protectiveness toward Will—she takes over the case to shield him from further trauma. Her sharpness and refusal to be deterred by the local sheriff reveal her strategic mind.
  • Will Trent: Even after sustaining a hand injury, Will remains focused on the case. He warns Faith not to underestimate Dave and reveals that he and Dave share a history at the children’s home. His caution proves prescient.
  • Dave McAlpine: Initially portrays himself as a simple, manipulative hillbilly, but his genuine grief upon learning of Mercy’s death undermines the open-and-shut theory. The voicemail suggests he may have been her unlikely lifeline.
  • Sara Linton: Briefly appears to update Amanda and Faith on the medical and forensic details. She remains calm and pragmatic, already planning to search for Jon with Delilah.

Themes, Symbols, or Motifs

  • Isolation and limited access: The lodge’s remote location, spotty cell service, and dependence on Wi-Fi create a locked-room atmosphere. Faith’s difficulty reaching anyone underscores how cut off the crime scene is.
  • Domestic violence and cycles of abuse: Dave’s history of strangling Mercy and Mercy’s unwillingness to testify illustrate the tragic cycle. The voicemail subverts expectations: Mercy calls her abuser for help, complicating the portrait of their relationship.
  • Trust and deception: Faith must navigate multiple layers of deception—from Dave’s hillbilly act to the sheriff’s obstruction. The theme of not trusting appearances recurs strongly.
  • Unreliable narratives: Every character (Dave, Delilah, Biscuits) has a version of events that contradicts others. Mercy’s voicemail becomes the first objective piece of the puzzle.

Why This Chapter Matters

This chapter is the turning point in the investigation. What initially appeared to be an open-and-shut case (Dave confessed to strangling Mercy, plus physical evidence) is thrown into doubt by Mercy’s last voicemail. Faith’s discovery forces the GBI to look beyond Dave and consider every guest, family member, and employee at the McAlpine Lodge. The locked-room mystery becomes real. Additionally, the chapter deepens Faith’s role as a protagonist, showing her deductive skills under pressure and giving readers a new point-of-view on the same set of facts Will and Sara encountered earlier.

Study Questions and Answers

1. Why does Amanda decide to take over the murder investigation from Sheriff Hartshorne?
Amanda wants to protect Will, who is supposed to be on his honeymoon. She also recognizes that Hartshorne is hostile to the GBI and unlikely to conduct a thorough investigation. She uses leverage—threatening to scrutinize his county for undocumented workers and child labor violations—to force his cooperation.

2. How does Faith conclude that Dave did not murder Mercy?
Faith listens to Mercy’s voicemail on Dave’s phone. The call was made at 11:28 PM, and Mercy says, “Dave will be here soon.” Then the message cuts off. Will estimated Mercy’s time of death as midnight. If Dave had been the killer, Mercy would not have been calling him for help minutes earlier. The timeline makes it impossible for Dave to have been both the one she pleaded with and the one who killed her.

3. What does Will reveal about his and Dave’s shared past, and why is it important?
Will tells Faith that both he and Dave were at the same children’s home. Dave (called “the Jackal”) bullied Will there. Will also notes that Dave’s age was falsified on official records, suggesting the McAlpine family aged him down. This shared history means Will has insight into Dave’s character—cunning and manipulative—which influences the investigation’s direction.

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