An LAPD homicide detective works to solve the murder of a 13-year-old boy while standing trial in federal court for the murder of a serial killer.

A routine traffic stop lands a suspect who poses a lethal new threat, while Bosch and J. Edgar pursue a promising lead in the bones case. Bosch locks horns with Deputy Chief Irving over his ongoing court battle, just as his relationship with Brasher picks up. And murder suspect Raynard Waits makes a startling confession about Bosch's cold case.

After the young victim in the bones case is identified, Bosch and J. Edgar are pulled into the troubled world of the boy's family. As Bosch's own trial escalates, his romance with Brasher takes a turn. And an intense confrontation with Raynard Waits forces Bosch to rethink everything.

The bones investigation uncovers the family's dark past. As Bosch's court case reaches a climactic verdict, he gets caught up in a dangerous field trip with Waits, who may be setting him up. A stunning turn of events leads to a frantic citywide manhunt, and Bosch is back on the hot seat.

As the Raynard Waits matter escalates, Deputy Chief Irving sidelines Bosch. The detective turns his focus to unraveling the mystery of the bones case - until he becomes ensnared in a dangerous game of cat and mouse.

Bosch struggles to manage both professional and personal fallout, as an echo of his past helps him discover pivotal clues in the Waits case. As the stakes escalate, a restless Waits hatches a deadly plan.

Bosch has to face the aftermath of his confrontation with Waits, while his daughter's unexpected visit offers some precious time together. In the wake of the bones investigation, Bosch's job is in jeopardy, and he's suddenly on the outside once again.

LAPD homicide detective Harry Bosch is back on the job after a suspension. When a dead body found in the trunk of a car on Mulholland Drive appears to have mob connections, Bosch takes on a case that could prove his biggest challenge yet. George Irving has a new assignment. Deputy Chief Irving weighs his options.

Bosch discovers that his murder case has wider implications. Deputy Chief Irving tries to stay above the political fray. Danger escalates with George Irving's plainclothes position. Harry receives a tip relating to his mother's murder. The Tony Allen investigation sends Bosch to Sin City.

Heightened circumstances create an unlikely family reunion for Bosch. A surprising revelation forces Harry back to square one on his case. The FBI approaches Eleanor with an enticing deal. George Irving faces severe jeopardy.

Deputy Chief Irving takes full measures in the wake of tragedy. Bosch finds himself in an unexpected alliance, which leads to a startling discovery. Eleanor seeks an advantage with the FBI. The nefarious gang behind serious crimes plans its exit strategy.

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.

The ugly truth behind his mother's murder has left LAPD homicide detective Harry Bosch as tense and restless as ever. A homeless veteran is murdered. Bosch works a high-profile trial involving a Hollywood director. The Veronica Allen proceeding nears resolution. Bosch keeps tabs on a longtime criminal who's eluded justice.

Bosch learns more about the dark past and murder of Billy Meadows. The credibility of a key witness threatens to undermine the Holland case. Edgar maneuvers to handle damning evidence. Dangerous men target Bosch.

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 secret effort to smear Bosch intensifies. Harry and his colleagues struggle to uncover who's trying to frame him. Irving closes a chapter in his personal life, but is ensnared in departmental politics. Bosch digs into the history of former soldiers under suspicion. Killers pull off a major score.

News explodes that the LAPD is investigating one of its own in a murder case. Bosch homes in on the motive behind a string of homicides. Robertson's doubts about Bosch deepen. Edgar discovers another disturbing link between Harry and a murder victim. Irving assists the investigation of the "Koreatown Killer."

Bosch and Robertson work a promising lead in the Gunn case. Further evidence gets the team closer to solving the Meadows murder. Irving does damage control on another crisis related to Bosch. Edgar takes action. The Holland case is on the brink.

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.

Three months after discovering a startling new lead, Det. Harry Bosch is still pursuing the truth behind his mother's cold case. A murder of a high-profile attorney puts the city on edge so Chief Irvin Irving creates a Task Force with Bosch in charge. Bosch must contend with two former adversaries.

Nearly a year has passed and Bosch, still grinding on the Daisy Clayton murder case, gets called to the Lake Hollywood Overlook to investigate the murder of medical physicist Stanley Kent. Edgar runs a sting on his dirty cops, Maddie starts a new internship, and Chief Irvin Irving jumpstarts his mayoral campaign.

A detail from Kent’s widow Alicia leads Bosch and the FBI to suspect a group of Sovereign citizens in connection to the stolen radioactive cesium and Overlook murder, but they clash over tactics, causing a deadly standoff. Maddie finds a puzzling omission in a trial transcript and Detective Vega is uncomfortable to learn she’s Billets’ "teacher’s pet."

Bosch discovers there’s more to Alicia Kent’s story than meets the eye. Elizabeth Clayton calls with news that jump starts her daughter’s cold case. Edgar and Hovan craft a plan to move in on Avril, Crate and an old buddy have an eventful night, and Antonio asks Maddie to introduce him to Bosch.

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.

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 killers to justice. Barrel receives a politically damaging old recording of Chief Irving. Billets adds a familiar face to her new task force, while Pierce makes a report to Captain Cooper that causes friction.

Six weeks later, Judge Sobel hears Chandler’s objections to Bosch’s key evidence against Alicia Kent. Irving’s new task force has a win. Hovan and Edgar are on the verge of bringing down Avril. Billets gets a call from IA, and while working his way through a list of new suspects in the Daisy Clayton case, Bosch uncovers a chilling connection.

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.

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.

New Year’s Eve 2019. While Los Angeles celebrates, a fire breaks out in an East Hollywood apartment building killing several residents including a ten-year-old girl. When it’s determined to be arson, Detective Harry Bosch arrives on the scene but his partner, Detective Jerry Edgar, is noticeably absent.

Bosch and Edgar follow a lead in the arson fire case to the famed Magic Castle. Lt. Billets ruffles feathers in the officer ranks. After Chandler’s new client Vincent Franzen spends a night in jail, he offers up a “muy grande pescado” as his get-out-of-jail-free card.

Bosch and Edgar track down La Mayorista, but Bosch asks Vega to assist after Edgar makes a costly error. Chandler and Maddie record Franzen’s statement for the SEC before Chandler stashes him away in a safehouse. Irving and Lopez discuss the arson case, each concealing their true agendas.

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.

After discovering Alvarez has been transferred, Bosch enlists Chief Irving’s help. Pierce and Vega get a lead on the hitman. Billets reaches out to a former Hollywood cop for intel on Leonard and Norris. When Bosch and Edgar meet with Carl Rogers, Edgar lets a detail of the case slip, enraging Bosch.

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.

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.