Detective Dave Summerly: The Flawed Protector of 2 Sisters Murder Investigations
Overview: A Cop Torn Between Duty and Heart
Detective Dave Summerly is a towering, old‑school LAPD investigator assigned to the Daisy Hansen murder case—and the on‑again, off‑again love interest of protagonist Rhonda Bird. Throughout 2 Sisters Murder Investigations, Summerly straddles the line between professional obligation and personal entanglement, making him both an obstacle and an eventual ally. His actions are never simple: he threatens Rhonda with a warrant one moment, then kisses her the next; he dismisses her theories, yet risks his career to search a ditch for a missing note. This article traces Summerly’s arc from skeptical antagonist to self‑sacrificing protector, highlighting the choices that define him and the themes his character illuminates.
Plot Role: The Investigation’s Inside Man
At his core, Summerly embodies the police perspective on Daisy Hansen’s disappearance. The department, including him, views the husband, Troy Hansen, as the obvious killer. From his first appearance, Summerly pressures Rhonda to drop her involvement, warning that Troy “dampens the mood” and is likely guilty. Yet his role evolves as he becomes a reluctant conduit of official information, occasionally helping the 2 Sisters Detective Agency—whether by revealing the security‑camera timeline or by physically searching for clues. Critically, his insider status means that when Rhonda’s life is in danger, Summerly is the one who races across Los Angeles to save her, sacrificing himself in the process.
Motivations and Traits Shown Through Actions
1. A Conscience Beneath the Badge
Evidence across the book reveals that Summerly’s moral compass is stronger than his adherence to procedure. In Chapter 41, he admits he called in a judicial favor to obtain a warrant—an ethically murky move—but his real aim was to get a look at Rhonda’s files and “put that case to bed.” He bends rules, yet he remains sickened by corruption. When Baby insists that only a cop could have planted the note in Troy’s yard, Summerly clings to the hope that “maybe there’s a chance” it was a journalist, not a fellow officer; he “never get[s] used to” corrupt cops (Chapter 78). This conflict between institutional loyalty and personal integrity drives his choices.
2. An Old‑School Cop in a Digital World
Baby describes him bluntly: “Dave Summerly is an old‑school police officer. Until last year he used a flip phone. He can’t tell a router from a toaster” (Chapter 75). This technological illiteracy isn’t comic relief; it underlines why he initially dismisses Rhonda’s theories about a serial predator. He relies on tangible evidence and gut instinct—traits that make him an effective street detective but also leave him a step behind the tech‑savvy Baby and the scheming Su Lim Marshall.
3. Emotional Vulnerability and Professional Pride
Summerly’s feelings for Rhonda drive many of his decisions, for better or worse. After he informs Daisy’s parents of her death, he shows up at Rhonda’s house, dirty and scratched, saying, “I just needed to see you” (Chapter 52). That raw moment leads to a passionate encounter, but it’s swiftly followed by his fury when Rhonda reveals she withheld evidence. He accuses her of being a profit‑driven lawyer, revealing his deep‑seated mistrust of anyone who operates outside the police system. The same emotional charge that draws him to Rhonda also makes him lash out when he feels betrayed.
Chronological Arc: From Adversary to Martyr
Phase 1: The Skeptical Ex
Summerly first appears in Chapter 14, pulling Rhonda over near the crime scene. He brings up their romantic history immediately: “Isn’t that one of the tired, vague old lines you fed me after you ghosted me?” He warns her that Troy is a killer and that she’s romanticizing an underdog. His tone is half‑warning, half‑longing. The chapter establishes that his professional stance is tangled with personal rejection.
Phase 2: The Warrant and the Kiss
By Chapter 41, the tension escalates. Summerly arrives with a search warrant, threatening to “absolutely trash this office.” Yet when Rhonda grabs him and kisses him hard, the pretense of control shatters. This moment crystallizes the push‑pull dynamic: he wields institutional power, but their history leaves him emotionally disarmed. The kiss is both a tactical gambit by Rhonda and an admission that their connection remains potent.
Phase 3: The Ditch Search and the Revelation
Chapter 52 finds Summerly going far beyond his official duties. After a second search for the missing note—climbing into a ditch, finding only dead raccoons—he tells Rhonda, “I did it for you.” This act of care rekindles their intimacy, but the moment dissolves when Rhonda finally shows him Troy’s box. Summerly’s rage in Chapter 54 (“What am I supposed to think, Rhonda? Isn’t that what lawyers do?”) and his exit with the box mark the low point of their relationship. He feels professionally betrayed, and she sees him as an institutional obstacle.
Phase 4: The Rescue and Sacrifice
The final act reverses their roles. When Rhonda is kidnapped by the corrupt Detective Brogan, Summerly teams up with Baby. Chapter 78 shows him throwing a siren on the roof, leaning on the horn, and desperately calling victims’ families to identify the rogue cop. His earlier skepticism evaporates; now he is fully allied with the Birds. The book’s resolution, revealed in Chapter 88, confirms that Summerly gave his life to save Rhonda. Her private guilt—“she never confessed her feelings”—underscores the tragic cost of his devotion.
Relationships: A Romance Built on Conflict
Summerly’s relationship with Rhonda Bird is defined by mutual attraction and mutual suspicion. Their chemistry is immediate and physical, but their worldviews clash. Rhonda, a former defense attorney, instinctively shields a suspect from police tunnel vision; Summerly, a career detective, sees that as contamination of evidence. Yet beneath the arguments, trust slowly builds. Their physical intimacy—the shower, the bed—functions as a temporary escape from the horrors of the case, but it’s never enough to bridge the gap between their professions. It is only when Rhonda’s life is on the line that Summerly fully commits, not as a cop but as a man who loves her.
With Baby, Summerly’s dynamic is initially prickly. He dismisses her as a reckless teenager, but in the crisis, they become an effective team. His protective instinct extends to the whole Bird family, culminating in his decision to race toward danger rather than wait for backup.
Key Decisions and Consequences
| Decision | Context | Consequence |
|---|---|---|
| Obtaining a questionable warrant | To access Rhonda’s files in the Martin Rosco case | Erodes his ethical standing but fails to intimidate Rhonda; leads to the kiss that rekindles their romance. |
| Concealing the security camera mix‑up | Tells Brogan about the timeline error | Buys time for the sisters, but doesn’t clear Troy—it merely shifts the window of opportunity. |
| Searching the brush for the note | After the body is found, on his own time | Strengthens his bond with Rhonda, but the failure to find the note deepens his frustration. |
| Taking the trophy box | Accepts Rhonda’s explanation, though furious | Removes evidence from Rhonda’s possession, but his subsequent investigation begins to turn toward the serial‑killer theory. |
| Racing to rescue Rhonda | When Brogan’s threat becomes clear | Costs him his life, but saves Rhonda, cementing him as a hero. |
Each decision reinforces that Summerly’s professional logic is constantly warring with personal loyalty. He wants to do the right thing, but he often chooses the path that brings him closer to Rhonda, even when it compromises procedure.
Theme and Symbol Connections
Corruption in Institutions
Summerly personifies the LAPD’s dual nature. He is a decent man inside a system that can shelter monsters like Brogan. His death is symbolic of the price of integrity: only when a good cop breaks from the pack can justice be served, but that break often comes at a fatal cost.
Protection and Self‑Sacrifice
The book’s central theme of protection runs directly through Summerly. Rhonda is driven by maternal protectiveness for Baby; Summerly’s final act mirrors that impulse. He is the shield that allows the sisters to continue their work. His death echoes the novel’s insistence that true protection may demand everything.
Guilt and the Weight of the Past
Summerly’s own past mistakes—calling in a favor for a judge’s nephew, possibly looking the other way on minor charges—reflect the compromises that haunt many cops. His guilt over these decisions may explain why he overcompensates in the search for the note and why he ultimately chooses to face Brogan alone.
Deception and the Search for Truth
Summerly begins the story believing in the official narrative: the husband did it. His gradual acceptance that truth is more complex parallels the sisters’ journey. The planted note, the trophy box, and the affair all shatter his faith in easy answers, forcing him to confront the deception that pervades his own department.
5 Book‑Specific Questions Answered
Q1. Why does Summerly get a warrant to search Rhonda’s office?
He needs a pretext to examine her case files, because he suspects she’s hiding information about Troy Hansen. He admits he “cooked up some bullshit” about the Martin Rosco case to force entry, calling in a favor from a judge (Chapter 41). It’s a bluff meant to pressure Rhonda, not a genuine homicide inquiry.
Q2. What is the significance of the abandoned note search?
After Daisy’s body is discovered, a note supposedly left by the killer points to the location. Summerly leads a second search through brush and a ditch, finding nothing. His willingness to do that dirty work—motivated by his feelings for Rhonda—shows he values her trust more than departmental protocol. The absence of the note also fuels suspicion that the evidence was planted.
Q3. How does Summerly react to learning about the trophy box?
He is furious. He accuses Rhonda of corrupting the chain of custody and jeopardizing witness testimony. Even as he handles each evidence bag with care, he says, “The thing you should have done when you discovered Daisy was having an affair was tell me” (Chapter 54). He then takes the box, severing their collaboration until the final crisis.
Q4. What does Summerly’s relationship with Rhonda reveal about his character?
Their on‑again, off‑again romance exposes Summerly’s vulnerability. Despite his authoritarian bluster, he craves Rhonda’s approval. When he shows up after the death notification “just needing to see [her],” he momentarily drops the cop facade and becomes a man seeking comfort. That need, however, clashes with his professional worldview, creating the central conflict of his arc.
Q5. In what way does Summerly change by the novel’s end?
He transforms from a by‑the‑book detective ready to arrest Troy into a man who follows the evidence wherever it leads—even if it implicates a fellow officer. His collaboration with Baby in the car chase, his frantic phone calls to identify Brogan, and his ultimate sacrifice all demonstrate that his loyalty has shifted from the institution to the truth and to Rhonda. His death redeems his earlier mistakes and enshrines him as the story’s tragic hero.
For more on how these threads tie together, visit the full book summary, explore the ending explained, or test your knowledge with our questions and answers.