It stars Titus Welliver as Harry Bosch, who's now doing private detective work after leaving the LAPD, Madison Lintz as Madeline "Maddie" Bosch, Harry's daughter and now rookie LAPD officer based from the Hollywood Station and Mimi Rogers as Honey Chandler, defense attorney who decided to defend a homeless man accused of murder by the LAPD. It adapts plot threads from Michael Connelly novels The Night Fire, Dark Sacred Night, and Two Kinds of Truth.
The Bosches work the street on their respective sides with Harry being recruited by Honey help look into a case that could involve The Mafiya while checking on a case for a recluse aerospace businessman millionaire on whether he had a child out of wedlock that he wasnt made aware of. Maddie gets into patrol shifts, wirking with various experienced officers and encounter various realities in the streets of LA.
The show is renewed for another season prior to the first season being streamed online.
This series provides examples of:
- Bavarian Fire Drill: Bosch gets out of being shot by armed security in an oil refinery used by Carl Rogers by using Creighton's business card to pose as a Trident Security officer doing a surprise audit.
- The Cameo: Most of the cast of Bosch does not appear as Amazon basically worked that show into Bosch: Legacy as a cost-cutting move. But Jamie Hector shows up briefly as Jerry Edgar, in a scene where Bosch asks his ex-partner to stash some sensitive information from the Whitney Vance investigation.
- Clear My Name: Honey decides to take the case of Jeffrey Herstadt, a homeless man the LAPD are trying hard to paint as responsible for the stabbing death of a respected doctor.
- Jury and Witness Tampering: The show opens with Carl Rogers getting off on a mistrial after the Russian mobsters he's affiliated with intimidate Willy Datz (the Vegas mobster who hired the hitman that killed Franzen and attempted to kill Chandler and Maddie) into recanting his testimony.
- Mythology Gag: "Plan B" has Harry mention the tunnels in Tora Bora where he'd previously encountered planted explosives, after infiltrating the Drysdale oil refinery.
- "Chain of Authenticity" has Honey telling the California Attorney General that she has the scars to prove it, referring back to Season 7 of Bosch after she was nearly assassinated in her own house.
- Police Procedural: The genre centers on Maddie as she learns the ropes of being an LAPD officer by learning what its like from various training officers.
- Private Intelligence Agency: Trident Security eavesdrop on Harry after his initial meeting with Whitney Vance of Advance Engineering via aerial drones despite the fact that TS arranged for the meeting.
- Spotting the Thread: How Bosch figures out Alda is behind almost everything. His first clue is the realization that Whitney Vance couldn't have written the amended will because he personally saw the man barely able to handle a pen writing his name to a check. He then has Alda sign a fake affidavit and it'll be a snap comparing the handwriting to discover Alda wrote the will on Vance's orders, then forged his signature at the end.
- Surprisingly Realistic Outcome: When Los Angeles is hit by a minor tremor in "The Wrong Side of Goodbye", some cracks appear on some parts of Harry's house. He is warned by an inspector that he needs to look at the foundations or have his house torn down and reconstructed.
- Two Lines, No Waiting: While Harry is involved with various PI cases and hired by various clients (including Honey), Madeline works through the LAPD and tries to be an officer the force can count on while having the legacy of being the daughter of parents who have careers in law enforcement and also struggles with the various cases that she encounters as a uniformed officer.
- Wham Episode:
- In "Always/All Ways", Harry races to Maddie's apartment to see signs of someone breaking into her apartment by destroying the mesh screen.