Cynthia Kaye McWilliams

In 2019, a fire breaks out in an East Hollywood apartment building killing several residents including a 10-year-old girl. Detective Harry Bosch arrives on the scene, but his partner is noticeably absent.

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 jump-starts his mayoral campaign.

Bosch and Edgar follow a lead in the arson fire case to the famed Magic Castle. Lt. Billets ruffles feathers in the ranks. After Chandler's client, Vincent Franzen, spends a night in jail, he offers up a "big fish" as his get-out-of-jail-free card.

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.