Chandler and Bosch locate Spencer, and try to pressure him to flip. At Borders' habeas hearing, Chandler gains standing for Bosch and reveals the Cronyns' conspiracy. Edgar connects Marcos and Arias to a shady Haitian under CIA protection. Irving considers his future. Pierce and Vega catch a gruesome new homicide. Bosch has one remaining loose end to tie up in the Skyler murder.

Pierce and Vega find more body parts, and tie their murder to an ongoing RHD case. Maddie tells Bosch she sent the memo to Chandler, and doesn't regret it. Edgar knows who killed Gary Wise, but can't prove it. At his retirement party, Barrel springs his own surprise. Bosch commits to solving the murder of Daisy Clayton, Irving makes a big announcement, and Walsh returns for one last dance.

Bosch and Sgt. Amy Snyder uncover a key piece of evidence that could compromise the entire Elias investigation. Edgar and Robertson are rocked by personal disappointment. Irving exposes his enemies. Bosch stalks the suspected Elias killer on his own, and comes face to face with his past.

Edgar interviews Clayton, desperate for details on Bosch's location in the desert. Meanwhile, Stones and Carter tell Bosch he's going home, but ominously take him up in the plane by himself. Billets resolves to turn a blind eye to the falsified crime stats. Crate plans Barrel's surprise retirement party. Irving makes his case to the DA, and Edgar gets closer to finding Bo Jonas.

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 things go, or take matters into their own hands.

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.

Bosch operates behind-the-scenes to expose wrongdoers. Killers are in the wind. Edgar deals with the fallout of a crucial choice.

The department rallies when a threat hits close to home. There's a pivotal turn in the Holland case. Bosch is forced to face a dark truth. Irving embraces a lifelong goal. There's no honor among thieves.

Bosch's relentless pursuit in the Meadows case reaches a climax. Bosch and Edgar talk about a startling discovery. An unexpected visitor drops in on Bosch and Maddie. Harry learns that his history is far from settled.

Hollywood Station goes on TAC Alert. Irving plots his next moves. With new evidence, the Elias case takes an unexpected turn. Maddie tries to connect with her past. Bosch harbors doubts about his Task Force and interviews a new suspect.

The protest looming, Billets strikes a deal with the activists. Irving realizes that old friends are new enemies. Crate and Barrel solve the case of their careers. As the Task Force scrambles to salvage their investigation, Bosch finds himself in the depths of underground Los Angeles.

Bosch continues his hunt for the pharmacy killers. Edgar confronts possible suspects in Gary Wise's murder. Hoping to rattle some cages, Bosch pays a surprise visit to an old nemesis. Chief Irving considers a run for mayor.

Bosch closes in on a suspect in the Daisy Clayton murder as Elizabeth begins to unravel. Edgar discovers Avril is as cunning as ever, and worries he’ll slip away. The car czar makes a hard play to force Irving out of the mayoral race, and IA investigates the complaint against Billets. In Bosch’s crosshairs, Daisy’s killer makes a shocking confession.

After Maddie’s involvement with the Franzen case leaves her exposed, she must testify before a grand jury to stay safe. Irving asks FBI SAC Brenner for help with Alvarez, learning something useful about Peña. The little tamale girl’s father pays Bosch a visit; his pain strengthens Bosch’s resolve to bring her killers to justice. Leonard and Norris push Billets to the brink.

Bosch focuses on taking down a criminal mastermind. Eleanor delivers for the FBI. Opposing forces with violent intentions all converge on the same spot.

Det. Francis Sheehan comes clean to Bosch, Robertson suspects a leak in the investigation, and Edgar joins the Task Force. Social unrest surrounding the Elias murder grows and Irving is pressured to intervene. Eleanor asks Bosch for parenting advice and confesses the truth about her marriage to Reggie Woo.

Bonner has a breakthrough in the Borders case. Christina Henry gets closer to uncovering police misconduct. Bosch realizes not everything with the Borders investigation was as it appeared. Edgar and Bosch get more than they bargained for in a return trip to the Garcia Clinic.

Stranded in the desert without backup, Bosch closes in on his murder suspects and learns more about Clayton. Worried about her dad, Maddie turns to Billets for answers. Billets, in turn, confronts Edgar about Bosch's rogue mission. Pierce and Vega head to Bakersfield to find Jose Jr. Anderson gets a tip about police misconduct in the Borders case, and Cronyn implicates Bosch.

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.

The season finale reaches an explosive climax. Bosch and Edgar discover the final piece of the Tony Allen investigation. Harry searches to uncover the truth behind his mother's murder.

Bosch clashes with his fellow detectives. Irving weighs his career options just as his personal life takes a turn. The killers behind the Meadows murder clean up loose ends. Questions swirl about whether Bosch is an avenging angel.

The search for Sheehan intensifies, as pressure mounts to solve the Elias murder. The Task Force waits for ballistics to confirm their suspicions. Edgar and Bosch pursue an unofficial 'side project' in the San Gabriel Valley. Billets and Dets. Crate and Barrel respond to a suspicious hit and run in Hollywood.

As Bosch digs into the Skyler case, he becomes more convinced that the Olmer confession is false. Robertson zeroes in on the identity of the pharmacy killers. Seeking a connection to the pill mill, Bosch goes undercover and befriends a fellow vet. Pierce and Vega work a lead on Jose, Jr. Edgar discovers that Gary Wise's life was more troubled than it appeared.

Bosch dives deeper into Daisy Clayton’s troubled past. Edgar scrambles to find evidence confirming Bosch’s suspicions in the Kent case. Hovan goes undercover to learn more about Avril’s criminal dealings. Crate and Barrel return to the Homicide table, but their celebration is overshadowed by bad news.

Bosch is pulled away from the arson case to a double homicide in the Hollywood Hills and finds RHD Detective Jimmy Robertson on the scene. When the harassment of Lt. Billets escalates, Captain Cooper and Lt. Thorne are angry that she reported it to IA instead of talking to them. Maddie makes a shocking discovery. Bosch and Edgar try to get Alvarez to talk.