Harry Bosch finds out one of his old cases is up for review and worries that all the cases since might be questioned. In another part of town, thugs in masks murder a pharmacist.

Bosch investigates new evidence that may overturn Borders' conviction, but he remains convinced they locked up the right man. Lieutenant Billets is forced to deal with Crate and Barrel's role in the accident at the pharmacy crime scene.

Detective Edgar questions Clayton in an effort to locate Bosch. Clayton suffers serious addiction withdrawal, but remembers some details that may prove helpful. The LA Times article about Bosch and Borders has blown Bosch's cover. Walsh sends Bosch out over the Salton Sea to be killed, but Harry turns the tables on his would-be killers. A worried Maddie reads the article about her father, and, his whereabouts unknown, fears the worst. As Billets insists they inform LAPD command and local authorities that Bosch has gone missing, the call comes in that Bosch is heading back to town. Spencer's now in the wind, but Chandler suspects he's someplace the Cronyns control. DDA Kennedy accuses Christina Henry of being Anderson's source for his Borders expose. Though she denies it, he cautions her not to let her personal feelings about Bosch cloud her judgment. Chandler and Bosch uncover more details about how evidence was manipulated in the Borders case. Pierce and Vega nail Hart in the pharmacy murders. Irving tries to persuade the DA not to pursue the officer-involved shooting. He promises to deal with it internally, and her fair treatment of the cops could go a long way toward securing her political future. Then the Chief makes a rare appearance at Hollywood Station - seeking the truth about Bosch's undercover adventures in the desert. Edgar realizes a key witness to Gary Wise's murder is hiding in plain sight.

Bosch and Chandler track down Spencer, and try to persuade him to turn on the Cronyns in order to save himself. DEA Agent Hovan interviews Hart, who teases some additional useful information about the real mastermind behind the killings. Pierce and Vega catch a gruesome new homicide. Christina Henry continues her pursuit to have the DA look into possible criminal misconduct by Detective Harry Bosch. Crate plans Barrel's retirement party. Edgar finally tracks down Bo Jonas, who provides new clues about Gary's murder. At Hollywood Station, Captain Cooper convenes Lieutenants Billets and Thorne, wanting to confirm everyone's on the same page regarding the doctored crime stats. Chandler asks Bosch what Henry has against him, believing she can exploit Henry's personal animus at the upcoming hearing. The hearing begins. To the surprise of DDA Kennedy and the dismay of the Cronyns, Chandler is able to convince Judge Sobel that Bosch has standing. Tension mounts as she presents her case, and Borders unravels and exposes the entire scheme behind the case. Maddie tells Bosch she's decided to go back to school early. She reveals that what she really needs is some space - from him.

Chandler brokers a plea deal that leads to a confession, giving Bosch and Edgar all they need to go after Kent's killer. Bosch digs deeper into a street hustle involving Daisy, but there is trouble. Irving pitches a new task force aimed at combatting homelessness, and Billets puts Vega and Pierce in an awkward position.

Working to close the murder of the Federal informant, Bosch and Edgar reveal an explosive new clue. Dwight pressures Edgar to do more to bring his son's killer to justice. Barrel receives a politically damaging old recording. Billets adds a familiar face to her new task force, while Pierce makes a report to Captain Cooper that causes friction.

Irving and Maddie make big decisions about their futures. Bosch and Edgar, having weathered unexpected tragedies, share bitter frustration with a system that has seemingly failed them. But with the motion hearing on the Kent murder case evidence at hand, they're each faced with a choice: to let thing go, or to take matters into their own hands.

Robertson and Bennett follow the hitman's trail to Las Vegas, hoping to find a connection to Fowkkes' other clients. When Billets performs a security evaluation at a local jewelry shop, she gets more than she bargained for. Irving gives Bosch an order, causing Bosch to lose faith in the system he has defended his entire career.

As Billets posts the Hollywood homicide detectives' new assignments, Bosch puts a plan in motion to arrest Mickey Peña, leading to some severe consequences. Billets makes an impression and Maddie makes a decision about her future.