Broken (will Trent, #4)

The novel is the fourth installment in Karin Slaughter's Will Trent series, set in the fictional Grant County, Georgia. The story centers on the murder of a college student, a suspicious death in police custody, and an investigation that exposes corruption, negligence, and a deadly pharmaceutical fraud.

On a freezing November evening, Allison Spooner, a 21-year-old student at Grant Tech, walks along the shores of Lake Grant, brooding over her troubles. As she contemplates suicide, someone seizes her from behind, forces her face into the mud, and stabs her in the neck.

The next morning, Detective Lena Adams oversees what appears to be a suicide at a lakeside cove called Lover's Point. Divers pull a young woman's body from the water, weighed down by cinder blocks chained to her waist. A note reading "I want it over" sits beneath a pair of sneakers on shore. The victim is identified as Allison Spooner. When a minnow wriggles out of a precise slit in the back of her neck, the case transforms into a homicide investigation.

Lena briefs Frank Wallace, the interim police chief, who has been drinking all morning. At Allison's listed address, a converted garage, Detective Brad Stephens spots a masked intruder. During the confrontation, Frank's gun discharges and he falls bleeding. The suspect flees and stabs Brad in the stomach before Frank tackles him. The suspect is Tommy Braham, a 19-year-old with an intellectual disability whose father owns the property. Brad is airlifted to a hospital in critical condition.

Meanwhile, Sara Linton, the former county medical examiner and widow of the late police chief Jeffrey Tolliver, arrives for Thanksgiving. She has not been home in three and a half years, and every landmark reminds her of Jeffrey, who was killed while on duty.

Frank calls Sara to the station, saying Tommy needs medical attention. In his cell, Sara finds Tommy dead, both wrists sliced open with a metal ink cartridge. The words "Not me" are scrawled in blood on the wall. Sara reads Tommy's confession, a coached document with vocabulary beyond his abilities, and concludes Lena coerced a false confession from a young man with an intellectual disability and then failed to frisk him before placing him in the cell. Furious, Sara calls Amanda Wagner, a deputy director at the Georgia Bureau of Investigation (GBI), to demand an outside investigation.

Sara meets GBI Special Agent Will Trent and lays out her case. She holds Lena responsible for Jeffrey's death and argues that Lena has a pattern of getting people hurt through recklessness. Will notes that charging Tommy only with murder, rather than the simpler charge of assaulting officers, seems designed to close the case quickly. Sara provides Will with photocopies of station files. At the station, Will faces hostility. The security cameras have stopped recording, and a key page of the case file, the 911 transcript, is missing. He calls his partner Faith Mitchell, and they note that incident reports show Tommy had recently developed an uncharacteristic temper.

At the hospital, Frank threatens Lena, ordering her to stick to his version of events or he will destroy her career. He forces her to dispose of the letter opener used in the confrontation. Sara hosts Will for dinner, where he reveals he grew up in the Atlanta Children's Home, a state-run orphanage. Later, Will and Sara realize Frank may have staged the discovery of Tommy's body, summoning Sara as a credible witness. Will warns Sara that his investigation will turn the town against her.

That night, Jason Howell, Allison's boyfriend, sits alone in his dorm agonizing over a scheme involving Allison and Tommy. He begins composing an anonymous email to report wrongdoing but is killed before he can send it.

Tuesday, Will meets Lionel Harris, the diner owner who employed Allison, and who implies Frank carries the racial prejudices of former chief Ben Carver. At Lover's Point, Will discovers blood spray absorbed into an oak tree's bark, proving Allison was murdered at the lake, not at the apartment. Back at the garage, a blood test confirms the stain by the bed came from Tommy's dog. Will also finds evidence that Frank cut himself on the garage door rather than being slashed by Tommy.

Will and Sara perform autopsies at Brock's Funeral Home. The stab wound severed Allison's carotid sheath with a blade thrust in and twisted, a precise killing. Frank arrives with a hunting knife as evidence, but Sara identifies it as the wrong weapon. Hours later, Jason is discovered murdered in his dorm, stabbed with the same signature twist. Sara notes the escalation: Allison's murder is cold and precise while Jason's is driven by rage.

Searching the Braham house, Will finds a pill bottle in Tommy's bathroom labeled with the initials "HCC," standing for Heartsdale Children's Clinic, and an eight-digit number. Tommy's father Gordon Braham arrives from Florida, grief-stricken, and confirms that Allison's boyfriend was named Jason. Lena confesses to Will, accepting responsibility for coercing Tommy's false confession and failing to frisk him. Will keeps her on the case for her local knowledge.

Working late, Sara reads Allison's journal aloud to Will. It is a clinical mood log spanning 104 days, exactly the documentation required for a drug trial participant. Sara connects the pill bottle markings to a double-blind study enrollee number. A note in Allison's bag turns out to be the top half of the page whose torn bottom served as the fake suicide note.

When Lena quits the force after Frank physically assaults her, she crosses to the children's clinic and discovers Darla Jackson, the neighbor's nurse, cleaning blood off a baseball bat. Darla imprisons Lena in a bomb shelter beneath the clinic, revealing herself as the killer and as Frank's estranged daughter. Darla ran a drug trial fraud, enrolling participants multiple times under different numbers to collect extra payments. Jason and Allison discovered the scheme and blackmailed her. Darla injects Lena with a sedative and leaves her to die from her infected hand.

After midnight, Will, Sara, and Jared Long converge on the clinic. Jared is Jeffrey Tolliver's biological son and Lena's boyfriend. Sara sees him in the moonlight and briefly mistakes him for Jeffrey. Will and Jared find Lena barely conscious in the basement. Behind the building, Darla confronts Sara at knifepoint. The eroded riverbank collapses, plunging both women into the flooding river. Sara grabs Darla and thrusts her into granite boulders, killing her. Pinned underwater, Sara nearly surrenders, imagining joining Jeffrey, but forces herself back to the surface. Will pulls her to safety with a rope.

The next morning, Will visits Frank, now bedridden with terminal cancer. Frank admits Darla was his daughter and that he covered up her criminal history. He claims he believed Tommy killed Allison and only wanted to hide Darla's fraud. Will recognizes that Frank's evidence tampering enabled Jason's murder by delaying the investigation but acknowledges that proving further culpability is nearly impossible.

Before Will returns to Atlanta, Sara explains that because Tommy was enrolled in the drug trial twice, he unknowingly took double the dose of the experimental antidepressant, causing his aggression and contributing to his suicide. Sara tells Will she was raped in college, which is why she cannot have children, a revelation offered with the same trust Will showed in sharing his childhood. Will receives word that his wife Angie's mother has died. Sara tells him to go home.

Three weeks later, Lena stands at Jeffrey's grave. The police review board finds no fault in Tommy's suicide. Frank has died of cancer. Lena has recovered from two operations for the staph infection in her hand and accepted a detective position in Macon. She is engaged to Jared. As he drives them out of Grant County, Lena watches the town disappear in the rearview mirror with only relief.